HAVIT E529BT NECKBAND BLUETOOTH WIRELESS EAR PHONE

Bluetooth Version：V5.0
battery: 250mAh 
Play time: about 14H (60% volume)
Talk time: 13H
Standby time: 180H
Charging time: About 0.8H
Type-C
Wireless working range: 10M (without obstacles )
Speaker: Φ10MM
Speaker sensitivity: 96±3 dB  1kHz/1mW
Profiles?supported: HFP,HSP,A2DP,?AVRCP
Impedance: 32?±15% 1kHz
Speaker frequency: 20Hz～20KHz
Input voltage / current: DC 5V/1A