CHENSIVE Bone Conduction Headphones K08-99 User Manual

Introduction

Thank you for choosing the CHENSIVE Bone Conduction Headphones K08-99. These open-ear headphones utilize bone conduction technology to deliver sound through your cheekbones, allowing you to remain aware of your surroundings while enjoying audio. This manual provides essential information for the safe and effective use of your headphones.

Diagram illustrating bone conduction and air conduction sound pathways

This diagram illustrates how bone conduction technology transmits sound directly to the inner ear through vibrations in the cheekbones, bypassing the eardrum, while air conduction uses the ear canal.

What's in the Box

Please check the package contents to ensure all items are present:

CHENSIVE Bone Conduction Headphones (K08-99)
USB Type-C Charging Cable
User Manual
Earplugs (for use in noisy environments if preferred)

Contents of the CHENSIVE Bone Conduction Headphones package, including headphones, charging cable, earplugs, and user manual

The package includes the bone conduction headphones, a USB-C charging cable, earplugs, and this user manual.

Product Features

Open-Ear Design: Delivers sound through cheekbones, allowing situational awareness.
Bluetooth 5.4: Ensures stable and fast wireless connection with compatible devices.
Stable & Comfortable Fit: Lightweight (25g) titanium memory metal frame designed for secure wear during physical activity.
IPX6 Waterproof: Resistant to sweat, dust, and moisture, suitable for various sports and outdoor activities.
Long Battery Life: Up to 12 hours of continuous music and calls, with a standby time of up to 240 hours.
Quick Charging: Fully charges in approximately 2 hours.

Image highlighting the lightweight design of the CHENSIVE Bone Conduction Headphones, weighing 25 grams

The headphones are designed to be lightweight at 25 grams for extended comfortable wear.

Setup

1. Charging the Headphones

Before first use, fully charge your headphones. Use the provided USB Type-C cable to connect the headphones to a compatible USB power source (e.g., computer USB port, wall adapter).

• Charging Time: Approximately 2 hours for a full charge.
• Battery Life: Up to 12 hours of playback/talk time, 240 hours standby.

Close-up image of the USB Type-C charging port on the CHENSIVE Bone Conduction Headphones with a charging cable connected

Connect the USB-C cable to the charging port to power up the headphones.

2. Powering On/Off

• Power On: Press and hold the Power button for 3 seconds until the indicator light flashes.
• Power Off: Press and hold the Power button for 3 seconds until the indicator light turns off.

3. Bluetooth Pairing

To connect your headphones to a device:

Ensure the headphones are powered off.
Press and hold the Power button for approximately 5-7 seconds until the indicator light flashes red and blue alternately, indicating pairing mode.
On your device (smartphone, tablet, computer), enable Bluetooth and search for new devices.
Select "K08-99" from the list of available devices.
Once connected, the indicator light will turn solid blue or flash blue slowly.

Image showing a smartphone screen with Bluetooth settings open, displaying 'K08-99' as an available device for connection, alongside a diagram of Bluetooth 5.4 technology

The headphones utilize Bluetooth 5.4 for a stable and efficient connection to your devices.

4. Wearing the Headphones

Place the headphones with the transducers resting on your cheekbones, just in front of your ears. The band should wrap around the back of your head. Adjust for a comfortable and secure fit.

A woman wearing the CHENSIVE Bone Conduction Headphones, demonstrating the open-ear design with transducers resting on her cheekbones

The open-ear design allows you to hear ambient sounds while listening to audio.

Operating Instructions

The CHENSIVE K08-99 headphones feature intuitive controls for managing audio playback and calls. Refer to the diagram below for button locations and functions.

Diagram illustrating the control buttons on the CHENSIVE Bone Conduction Headphones and their functions for power, volume, track control, and call management

Control layout for the CHENSIVE K08-99 headphones.

Button/Action	Function
Power Button (Multi-function)	• Press and hold for 3s: Power On/Off • Press and hold for 5-7s (from off): Enter Pairing Mode • Click once: Play/Pause music, Answer/End call • Click twice: Redial last number • Press and hold for 1s (during incoming call): Reject call
Volume Up (+) Button	• Click once: Increase Volume • Press and hold for 2s: Next Track
Volume Down (-) Button	• Click once: Decrease Volume • Press and hold for 2s: Previous Track

Maintenance

Proper maintenance ensures the longevity and optimal performance of your headphones.

Cleaning: Wipe the headphones with a soft, damp cloth. Do not use harsh chemicals or abrasive materials. The IPX6 rating means they are resistant to sweat and light splashes, but do not submerge them in water.
Storage: Store the headphones in a cool, dry place away from direct sunlight and extreme temperatures.
Charging: Avoid overcharging. Disconnect the charging cable once the headphones are fully charged.

A man having water poured over his head while wearing the CHENSIVE Bone Conduction Headphones, demonstrating their IPX6 waterproof rating

The IPX6 rating provides resistance against sweat and splashes, making them suitable for active use.

Troubleshooting

If you encounter issues with your headphones, refer to the following common solutions:

Problem	Solution
Headphones do not power on.	• Ensure the headphones are fully charged. • Press and hold the Power button for 3 seconds.
Cannot pair with device.	• Ensure headphones are in pairing mode (red and blue flashing light). • Turn off Bluetooth on other nearby devices to avoid interference. • Restart your device's Bluetooth function. • Move the headphones closer to your device (within 1 meter).
No sound or low volume.	• Increase the volume on both the headphones and your connected device. • Ensure the headphones are properly connected to your device. • Check if the audio source is playing.
Sound quality is poor.	• Ensure there are no obstructions between the headphones and your device. • Move closer to your device to improve Bluetooth signal strength. • Try connecting to a different audio source or device.

Specifications

Feature	Detail
Model Name	K08-99
Connectivity Technology	Wireless (Bluetooth)
Bluetooth Version	5.4
Bluetooth Range	Up to 10 meters (33 feet)
Audio Driver Type	Bone Conduction Driver
Water Resistance Level	IPX6 (Waterproof)
Battery Life	12 Hours (Music/Calls)
Standby Time	240 Hours
Charging Time	2 Hours
Control Method	Physical Buttons
Material	Plastic, Titanium Memory Metal
Item Weight	25 grams (0.88 ounces)
Compatible Devices	Smartphones, Laptops, Tablets, Bluetooth-enabled Devices

Warranty and Support

CHENSIVE products are designed for reliability and performance. For warranty information, technical support, or customer service inquiries, please refer to the contact information provided on the product packaging or visit the official CHENSIVE website.

Please retain your proof of purchase for warranty claims.