Shenzhen Jiechen Technology specializes in manufacturing accessible wireless audio products, including true wireless earbuds and bone conduction earphones.
Shenzhen Jiechen Technology is an electronics manufacturer focused on delivering affordable wireless audio solutions. Their product lineup includes true wireless earbuds, bone conduction earphones, and sports Bluetooth headsets designed for everyday use and active lifestyles.
Known for models like the AS21 Bone Conduction Earphones and S16 True Wireless Earbuds, the brand incorporates modern Bluetooth connectivity, ergonomic designs, and water-resistant materials into their devices. Explore our directory for comprehensive user manuals, pairing instructions, and troubleshooting guides to get the most out of your Shenzhen Jiechen Technology audio equipment.
Selected manuals from manuals+ curated for this brand.
Common questions about manuals, registration, and support for this brand.
Ensure your earbuds are fully charged and turned off. Press and hold the multi-function button (MFB) until the LED indicator flashes red and blue (or take them out of the charging case depending on the model). Open your device's Bluetooth settings and select the earbud model (e.g., AS21 or S16) to connect.
Make sure the earbuds are disconnected from your phone. Click the touch button on both the left and right earbuds three times simultaneously. The blue and red lights will light up for 2 seconds and then turn off, meaning they have reset successfully.
The standard manufacturer's warranty covers your device and accessories against manufacturing defects for 1 year from the date of purchase. Physical damage, abuse, or unauthorized modifications are not covered.
Most fitness models, such as the U18 Pro, feature a nano waterproof coating that protects against sweat and rain. However, they are not completely waterproof and should never be submerged in a pool or worn in the shower.