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RZE-BT750E
Wireless Earphone
Operation Manual
Thank you for purchasing this product.
To use this product safely, read and understand this operation manual thoroughly before using
it. After reading this manual, keep it in a safe place so that it can be used when necessary.
Safety precautions
The information you need to prevent danger to the user and other people as well as property
damage is described below. "Description of signs" shows different categories of the degree of
danger or damage that may occur due to wrong handling. "Description of symbols" shows the
meaning of the symbols.
Important notes
• This book is only a guide for user's operation, not a criterion for configuration.
• Only use attachments/accessories specified by the manufacturer.
The lightning flash is intended to alert the user to the presence of
dangerous voltage within the product's enclosure, and touching the
internal components may result in a risk of electric shock to persons.
The exclamatory mark is intended to alert the user to the presence of
important operating instructions.
To reduce the risk of electric shock or fire, do not open the cover. Refer
servicing to qualified service personnel.
Description of signs
Indicates that there is a risk of death or serious injury.
Indicates that there is a risk of minor injury or property damage.
Description of symbols
Indicates "Prohibition" or "You must not
Indicates "Mandatory Action" or "Do as
do" with pictures and text.
indicated" with pictures and text.
„ What to do in the case of an abnormality
• Stop using the device immediately in case of an abnormality or failure.
• Remove the USB cable immediately when water or any foreign object enters the interior of the
device. It may cause a fire or electric shock. Remove the USB cable immediately, and contact
your dealer for a repair.
„ Usage
Do not use this product while driving for traffic safety.
• Do not use the product while riding a bicycle or driving a car or motorbike. Surrounding sounds
may not be heard clearly, which may cause a traffic accident.
• Besides during driving, do not use the product in places where surrounding sounds cannot be
heard, such as railroad crossings, station platforms, roadways, or construction sites to avoid
traffic accident.
Do not disassemble, repair, or modify the product.
• Doing so may cause a fault. Contact your dealer for a repair.
Do not leave in places within the reach of small children.
• Small children might swallow ear pieces by mistake and cause injury.
Do not expose the product to a strong shock such as dropping or stepping on the product.
• Doing so may cause a fault.
Do not raise the volume too high.
• Listening at ear-splitting volume for a long time may affect your hearing.
When using the product while walking, turn down the volume until surrounding sounds can
be heard clearly.
• Otherwise, it may cause a traffic accident.
Notes on usage
„ About handling
• If you feel unwell while using the product, stop using it immediately.
• Do not place the product either in wet, humid, dusty smoky, steamy places, near a heater, or in direct sunlight.
• Do not leave the product where it gets extremely hot such as in a car.
• Do not spray insecticide or any volatile material. Also do not keep the product touched with rubber or plastics for
a long time. The product may become discolored or its painting may come off.
„ About static electricity precautions
When wearing the earphone, you may feel the sound and stimulus caused by static electricity. In
dry-weather seasons or places where static electricity likely occurs, you can reduce it by avoiding
wearing clothes of chemical fiber, or using an antistatic ring.
„ About maintenance
• Wipe with a dry, soft cloth.
• If the ear piece gets dirty, take it off from the earphone and wash it with diluted neutral detergent by hand.
• Never use alcohol, paint thinner or benzine to clean this product. Doing so may cause the product's
surface deteriorate.
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„ Rechargeable battery (Lithium polymer ion)
To reduce the risk of fire, electric shock or product damage,
• Do not attempt to replace the battery by yourself, it is built-in and is not changeable.
• Do not heat, disassemble, or short-circuit the battery. Doing so may cause the battery and
power supply to generate heat, rupture, or ignite.
• Charge the battery only in an ambient temperature between 5 and 35 degrees Celsius.
Otherwise, the electrolyte solution might leak, battery performance might deteriorate and the
battery life might be shortened.
• Do not continue charging the battery if it does not reach full charge within the specified charging
time. Overcharging may cause the battery to become hot, rupture, or ignite.
• Do not expose the battery to excessive heat such as under the sun or near the fire or the like.
Overheat, leakage, or rupture may occur, resulting in burns or injury.
If you touch the battery fluid, rinse it off with water and consult with the doctor. If the battery
fluid spills over the device, wipe it off without touching the fluid.
If you leave the unit unused for a long period of time, the built-in rechargeable battery will
be in an over discharge state due to self discharge, and the charging capacity may deteriorate
or the battery may be no longer rechargeable. Even if you are not using the unit, charge the
battery once or twice a year for 3 hours each time.
Important Safety Instructions
1. Read these instructions.
2. Keep these instructions.
5028700
3. Heed all warnings.
4. Follow all instructions.
5. Do not use this apparatus near water with the Micro USB cover open.
6. Clean only with dry cloth.
7. Do not block any ventilation openings. Install in accordance with the manufacturer's instructions.
8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus
(including amplifiers) that produce heat.
9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has
two blades with one wider than the other. A grounding type plug has two blades and a third
grounding prong. The wide blade or the third prong are provided for your safety. If the provided
plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.
10. Protect the power cord from being walked on or pinched particularly at plugs, convenience
receptacles, and the point where they exit from the apparatus.
11. Only use attachments/accessories specified by the manufacturer.
12. Use only with the cart, stand, tripod, bracket, or table specified by the
manufacturer, or sold with the apparatus. When a cart is used, use caution when
moving the cart/apparatus combination to avoid injury from tip-over.
13. Unplug this apparatus during lightning storms or when unused for long periods of time.
14. Refer all servicing to qualified service personnel. Servicing is required when the
apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid
has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to
rain or moisture, does not operate normally, or has been dropped.
FCC Statement :
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:
1) This device may not cause harmful interference, and 2) This device must accept any interference
received, including interference that may cause undesired operation.
Note: This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a residential installation. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in accordance with
the instructions, may cause harmful interference to radio communication. However, there is no
guarantee that interference will not occur in a particular installation. If this equipment does cause
harmful interference to radio or television reception, which can be determined by turning the
equipment off and on, the user is encouraged to try to correct the interference by one or more of
the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
Caution: Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.
IC-CANADA :
This device complies with Industry Canada license-exempt RSS standard(s). Operation is subject
to the following two conditions: (1) this device may not cause interference, and (2) this device must
accept any interference, including interference that may cause undesired operation of the device.
This Class [B] digital apparatus complies with Canadian ICES-003.
Cet appareil s'accorde avec Industrie Canada licence-exempte RSS standard. (1) cet appareil
ne peut pas causer l'intervention, et (2) cet appareil doit accepter de l'intervention, y compris
l'intervention qui peut causer l'operation non desiree de.
Cet appareil numerique de la classe B est conforme a la norme NMB-003 du Canada.
California Prop 65 Warning :
This product contains chemicals, including lead, known to the State
of California to cause cancer and birth defects or other reproductive
harm. Wash hands after handling.
„ Disclaimer
• Toshiba shall not be responsible for any damage caused by an earthquake, thunderstorm,
flood damage, fire for which Toshiba is not responsible, acts of a third party, other
accidents, or damages caused by the user's willful acts or negligence, misuse, or use in
abnormal conditions.
• Toshiba shall not be responsible for any damage caused by failure to observe the information
described in the operation manual.
„ Disposal
• When disposing of this device, observe the laws, or ordinances and rules of the local government.
• When disposing of the battery, make a request to a recycle agency for disposal.
• This product contains a built-in lithium ion rechargeable battery. There is a risk of injury
due to fire, explosion or leakage if the battery is not used, handled, replaced or disposed
of properly. Dispose of the battery as required by local ordinances or regulations. Do not
disassemble, crush or expose the battery to fire or high temperatures.
About Using Bluetooth®
This unit is designed for use with Bluetooth® wireless devices compatible with the HFP, HSP,
SPP, A2DP and AVRCP streaming audio profiles. Refer to your Bluetooth® device's user manual
or technical support to determine if your Bluetooth® device supports these profiles.
„ Frequency band used
This unit uses the 2.4 GHz frequency band. However other wireless devices may use 2.4 GHz
frequency band as well and may cause interference with each other. To avoid interference,
please refrain from the use of the unit at the same time with other wireless devices.
„ Certification of this device
This unit conforms to frequency restrictions and has received certification based on
frequency laws, so a wireless permit is not necessary.
However, the following action is punishable by law in some countries:
• Taking apart/modifying the unit.
„ Usage restrictions
• Wireless transmission and/or use with all Bluetooth® equipped devices is not guaranteed.
• A device featuring the Bluetooth® function is required to conform to the Bluetooth® standard
specified by Bluetooth SIG, and be authenticated. Even if the connected device conforms
to the above mentioned Bluetooth® standard, some devices may not be connected or work
correctly, depending on the features or specifications of the device.
„ Range of use
Use this device within an unobstructed 10 m range. The range of use or perimeter may be
shortened depending on any obstructions, devices causing interference, other people in the
room, or the construction of the building. Please note that the range mentioned above is
not guaranteed.
The Bluetooth® word mark and logos are owned by the Bluetooth SIG, Inc. and are used
under license.
Note
• This unit may receive radio interference caused by mobile telephones during use. If
such interference occurs, please increase separation between this unit and the mobile
telephone.
Parts Names
Charging case
Charging status indicator for the case
(Front view)
Charging case
Type-C USB charging socket
(Rear view)
Charging case
Charging port
(Compartment)
Left
Right
Earbuds
Multi-function buttons (Touch Sensor)
(Left and Right)
Earbud status indicator
Getting Started
The earbuds and the charging case have built-in lithium-ion polymer batteries. Charge them
fully beforehand.
„ Charging the Earbuds
1
Place each earbud in the charging case in the right position and close
the case.
When charging the earphones using the charging case, the charging status indicator
for the earphones (RED) is turned ON and the charging status indicator of the charging
case (Blue) is turned on. When the earphones are fully charged, the charging indicator
for earphones and the case are turned OFF.
Note
• When the remaining battery becomes low, red indicator flashes every 5 seconds and "low
battery" message appears. Immediately charge the battery. Otherwise, the power runs out
if you keep using without charging.
• If the charging pin of the charging port in the charging case or the charging plate of the
earbuds is dirty, charging may not be completed. In that case, clean it with dry and soft cloth
or cotton swabs. If you push the charging pin on the port too hard while cleaning, the pin
may be bent. Clean it gently and slowly.
„ Charging the Charging Case
• Charging with commercially available wireless charger
1
Connect the wireless charger to a power source.
2
Place the wireless charger on a level surface or other location
recommended by the manufacturer.
3
Put the charging case vertically on the center of the wireless charger
or manufacturer recommended place.
• To improve charging efficiency, put the charging case on the center of the wireless
charger or the manufacturer recommended place.
Caution
• Please use the wireless charger that is compatible with QI standard.
• The charging case does not start charging when it is lying on or putting upside down
on the wireless charger.
4
The charging case starts charging a few seconds after you put it on
the wireless charger. When the charging starts, the charging status
indicator for the case turns on and flash during the charging.
Note
• The charging status indicator for the case (4 LEDs) shows the current battery capacity
level (such as 25, 50, 75 or 100 %).
Please refer to the instruction manual of your wireless charger for further instructions.
• Charging with the supplied USB cable
1
Insert the supplied USB cable into the Type-C USB charging socket on
the charging case.
2
Connect the USB cable to a USB port of your computer or a mobile
USB charger.
The charging status indicator flash during the charging.
Wearing the Earphone
Check the left and right, wear the ear piece in your ears.
• The one marked with "R" is for the right ear, and the one
marked with "L" is for the left ear.
• After use, take them off from your ears slowly.
R
Caution
• Pressing the earphones strongly or taking them off from your ears roughly may hurt your
eardrum. Put on or take off the earphones slowly.
Replacing Ear Pieces
• If the ear pieces are not fit in your ears, bass tone may not be heard clearly. To enjoy better
sounds, replace the ear piece sizes or adjust the position and make them fit in your ears.
• At the time of purchase, L size pieces are mounted. If they do not fit your ears, choose the
best size from the provided ear pieces and replace them.
• The sizes of the ear pieces are S, M and L(mounted at the time of factory shipment).
„ How to take off the ear pieces
Press the earphone with a hand and take off the ear piece with the other hand by twisting it
together with its shaft.
Note
• If the ear piece is difficult to take off, wrapping it with a dry soft cloth makes it easier.
„ How to mount ear pieces
Push the ear piece into the protrusion of the earphone and make sure it does not come off
easily.
Caution
• Mount ear pieces firmly into the product. Ear pieces might come off and be left in your
ears. If the ear pieces are left in your ears, contact a doctor.
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Summary of Contents for Toshiba T750E-R
- Page 1 • Do not place the product either in wet, humid, dusty smoky, steamy places, near a heater, or in direct sunlight. • Toshiba shall not be responsible for any damage caused by failure to observe the information • Do not leave the product where it gets extremely hot such as in a car.
- Page 2 Power ON and OFF Note • Operations may vary depending on your smartphone. • To pause, press the function button of right earphone once. „ Auto Power ON/OFF • To track down, press the function button of the left earphone twice. To track up, press the The earphones are turned on automatically when you take them out from the charging case. function button of the right earphone twice. A “Power On” message is heard, and the Blue and Red indicator flash for left earphone. In • To reduce the volume, press the function button of the left earphone three times. To increase the volume, press the function button of the right earphone three times.