Choetech HIFI Bean Earphone TWS black

Bluetooth version: V5.2
Bluetooth operating frequency: 2.402GHz-2.480GHz
Bluetooth rated voltage: 3.3-4.2V
Receiving distance: ≤10 m
Interface: type-c
Earphone Battery: Lithium battery 50mAh
Earphone case size: 27*20*5.5mm
Case battery: 380mAh
Depth of noise reduction: 35-40dB
Charging time: earbuds 1.5H，charging case about 1.5H
Talking/playing time: about 6hours (the actual use time depends on
the type of song
and volume requirements)
Supporting protocol: HSP,HFP,A2DP,AVRCP