Bluetooth version: BluetoothV5.0 BK3266

Function: Bluetooth converter

Interface: 3.5 audio female socket

Bluetooth effective distance: 10 meters (barrier-free)

Bluetooth protocol: HSP-V1.2 HFP-V1.7 A2DP-V1.3 AVRCP-V1.6

Bluetooth operating frequency: 2402MHZ~2480MHZ

Battery capacity: polymer lithium ion battery 3.7V/140mAh + ordinary protection board . Music time: about 10 hours (100% volume)Talk time: about 9 hours (90% volume)Charging time: about 2 hours

Microphone: ECM, condenser microphone, -383dB (0dB=1V/Pa), working voltage: 1.5-10V Direction: omnidirectional, size: 4*1.5MM

USB charging: Micro USB, DC5V, 500mA

Color: black

Size: 18*40*39. Weight: 1423g