Awei T77 Enc Wireless Bluetooth-Compatible 5.3 Headset

Bluetooth-compatible version: BT5.3 JL6973D4 Supported protocols: A2DP, HFP, AVRCP Battery capacity 30mAh*2 (without protection board, headphone board lithium battery protection IC) Charging compartment battery capacity: 250mAh (with protective board) Drive unit diameter: 13mm Charging time:1.5h Call time: 5h Play time: 4h Standby time: 300h Speaker sensitivity: 116±3DB Speaker impedance: 32Ω Input charging standard: DC 5V Bluetooth-compatible working frequency: 2.402G-2.480G Frequency response range: 20Hz-20000Hz Maximum transmission distance: 10m Voice prompt: support Multipoint connection: not support Wearing method: in-ear Interface: Type-C Waterproof level: IPX5 ENC noise reduction depth (call noise reduction): >-40dB