■Bluetooth version: BluetoothV5.0 BK3266
■Function: Bluetooth converter
■Interface: φ3.5 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, -38±3dB (0dB=1V/Pa), working voltage: 1.5-10V Direction: omnidirectional, size: φ4*1.5MM
■USB charging: Micro USB, DC5V, 500mA
■Color: black
■Size: 18*40*39. Weight: 14±23g
