Bluetooth version solution: 5.3 version Jerry 6973
Wireless frequency: 2.4 GHZ
Support protocol: A2DP1.3/HFP1.6/HSP1.2/AVRCP1.6/D11.3
Transmission distance: 10 m (accessibility)
Battery capacity: 30 mAh; 300 mAh
Play / talk time: about 5 hours
Charging time: about 1 hour
Charging voltage / current: 5V / 1A
Standby time: 120 hours
Horn impedance: φ8MM 32Ω
Minia-head sensitivity: -42 Db
Operating temperature: -10-50℃
Waterproof grade; IPX 5 living waterproof
material quality:ABS