HIFIMAN GR8 Wireless Bone Conduction Headphones Owner’s Manual
- June 6, 2024
- HIFIMan
Table of Contents
HIFIMAN GR8 Wireless Bone Conduction Headphones Owner’s Manual
Product Introduction
The headset is packaged with noise reducing earplugs that may improve sound quality, depending upon the listener’s preferences.
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Press and hold the power key for 3 seconds. The LED indicator will turn blue and say “POWER ON”. If no pre-paired device is within range or its Bluetooth is not turned on, the headphone will enter pairing mode with the LED indicator alternately flashing red and blue.
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On the source device, turn on the Bluetooth function, select “HIFIMAN-GR8” and connect. The LED indicator will flash blue and say “CONNECTED.”
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To disconnect, disable the Bluetooth function on
the source device. When successfully disconnected, a prompt tone will be heard in the headset. The headset will re-enter pairing mode after shutting down. To turn off the headset, press and hold the power key for 3 seconds. The LED indicator will turn red and display, “POWER OFF” will be heard. -
When powered, the headset will automatically try to reconnect to any previously paired devices in range.
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If no device is paired or connected 5 minutes, the GR8 will automatically turn off to conserve the battery.
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When the GR8 is connected but not in call or music mode, press and hold the Call Button for 2 seconds to enter Voice Assistant mode. Repeat the action to exit Voice Assistant mode.
IMPORTANT: Voice Assistant mode requires the support of the connected device.
Charging Operations
- LED red light: charge is in progress
- LED blue light: charge is complete
- LED red light flash: low battery
The GR8 does not support simultaneous charging and playing. When power on but not connected or during playing, the headset will automatically stop playing when charged.
Call Controls
Call Button
- To accept a call, press the Call Button once
- To end a call, press the Call Button once
- To reject a call, press the Call Button for 2 seconds
Volume +
To increase volume, press volume +
Volume –
To decrease volume, press volume –
Music Controls
- To Play / Pause, press the Call Button once
- To forward to the next track, press the volume + for 2 seconds
- To rewind to the previous track, press the volume – for 2 seconds
Volume +
To increase volume, press volume +
Volume –
To decrease volume, press volume –
Battery Status & Initialization
Battery Status
This feature is dependent upon the phone and its operating system running it. Therefore, it may not display on all devices.
If the operation is abnormal, initialize the GR8. The initialization steps are as follows:
- Remove Disconnect the headset from the connected Bluetooth devices
- Power on the headset by pressing the Volume + and Volume – keys together for 5 seconds to complete initialization. When 2 beeps are heard, the headset is powered off.
- Power on again, and connect the source device via Bluetooth.
Charger and Battery
Before charging the headset, please check the specifications of the charger to see if it meets the recommended requirements: DC5V+/-0.25V output voltage, 100mA-500mA output current. Charging the headset with higher voltage may cause irreparable damage.
Warning
Use only approved chargers for the headset, some of which are using unapproved
chargers may damage the headset and invalidate the warranty.
Avoid impacts with hard surfaces to prevent irreparable damage to the headset.
Battery Charging
This headset includes a built-in non-removable rechargeable battery. Do not attempt to remove the battery from the headset or it may cause permanent damage to the headset. When not used for extended periods, store the headset in a cool, dry, ventilated place, and charge it every two months.
When battery power is low, the LED indicator will flash red and the headset
will emit a low beeping sound. Charge immediately to avoid the headset
automatically shutting off.
Product Warranty
Your product is warrantied for a period of one year beginning with the original date of purchase. The dated sales or delivery receipt is your proof of purchase. You may be required to provide proof of purchase as a condition of receiving warranty service so please keep it handy.
If your product is under warranty and malfunctions occur, please contact HIFIMAN customer service or your authorized dealer. If necessary, and at the discretion of HIFIMAN, the company will provide a warranty repair or replacement of your product.
Caution: Do not disassemble or modify the product in any way.
Tampering with or modifying your HIFIMAN product will void its warranty.
This Limited Warranty does not apply to:
- Defective or discolored parts if the damages are caused by fluids, dirt, missing keys, broken plastic parts, or improper use.
- Damage caused by misuse with another product.
- Use of the product for other than its normal intended use, including, but not limited to, failure to use the product in accordance with the supplied Owner’s Guide.
- Damage caused by accident, abuse, neglect, or misuse.
- Lack of a valid dated receipt showing proof of purchase.
- Damage caused by repairs or other modifications to the system carried out by anyone other than HIFIMAN or an authorized HIFIMAN distributor or dealer.
- Damage caused by self-repair or if the product was disassembled or modified in any way.
HIFIMAN is committed to customer satisfaction. If you have any questions or concerns with your product, simply contact your authorized dealer or HIFIMAN (if purchased from us) and explain the issue in detail. Should a return be required, a return authorization (RMA) number will be issued. Return shipping to HIFIMAN or an authorized service facility will be at the owner’s expense.
The warranty applies to the first purchaser and is not transferable. Should you need warranty service, please contact your authorized HIFIMAN dealer, or email us at customerservice@HIFIMAN.com.
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FCC Warning Statement
Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. 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 radiocommunications. 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.
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.
The device has been evaluated to meet general RF exposure requirement.