T911 wireless 5.0 stereo music bluetooth headset

Product name: TWS Bluetooth headset;
Product model: T911
Product material: ABS + electronic components + lithium battery;
Power supply mode: USB;
Main control scheme: V5.0+EDR
Support protocol: HSP1.2, HFP1.6, A2DP1.3, AVRCP1.5
Sensitivity: ≥90db
Working frequency: 20-20KHZ
Working voltage: earphone 5V/50MA; charging box: 5V/1.5A
Charging time: 1H
Working hours: 3H
Standby time: 480H
Working distance: 10M
Single ear battery capacity: 50mAh;
Battery box battery capacity: 500mAh;
Number of charging the headset: 2-3 times