Awei T39 Bluetooth 5.3 Earphone

Bluetooth version v5.3 (AD6973D4). Support protocol: HSP, HFP, A2DP, AVRCP. Channel system: stereo. Battery capacity: 35mAh*2 (without protection board, lithium battery protection IC). Charging storage battery capacity: 3.7V/300mAh (with protective board). Movement unit: 13 mm in diameter. Charging time: 1H. Call time: 7 hours. Play time: 6H. Standby time: 200H. Earphone + charging storage with usage time (80% volume): 20H. Sensitivity: 93 ± 3db. Verse Impedance: 32. Enter the charging standard: DC 5V. Bluetooth operating frequency: 2.402G-2.480G. Maximum transmission distance: 10M. Voice Tips: Support. Multi-point connection: not supported. Manual: Chinese and English. Interface: Type-C. Waterproof level: ipx6.