BT-890 Bluetooth 4.2 Hanging Neck Design Bluetooth Headset, Support Music Play & Switching & Volume Control & Answer(Black) Filter-USB-C & Type-C Cable 15) Recording playback: 4 channel

15) Recording playback: 4 channel playback simultaneously (optional playback channel)

Output Voltage 5V

Upgrade the chip to maintain high-definition calls

3) Input audio connector: 1 x Toslink

BT-890 Bluetooth 4.2 Hanging Neck Design Bluetooth Headset, Support Music Play & Switching & Volume Control & Answer(Black) Filter-USB-C & Type-C Cable 15) Recording playback: 4 channel1. Bluetooth Version: Bluetooth V4. 2 2. Transmission distance: 10 meters 3. Use time: 6 8 hours 4. Standby time: 4 6 minutes automatic shutdown 5. Battery: 85 mAh rechargeable lithium battery 6. Functions: adjusting volume, switching songs, answering calls,call rejection, hangup, bluetooth playback, telephone replay,broadcast, bluetooth return, voice tips, power display, inform the caller number, intelligent shutdown, plain English broadcast