Remax TWS-19 Marshmallow Stereo Wirelss Earbuds

Bluetooth version    5.3
Transmission range    up to 10 m
Supported protocols    A2DP, HFP, HSP, AVRCP, SPP
Transducers    13 mm
Rated power    3mW
Frequency    20Hz~20KHz
Impedance    32Ω
Charging case battery capacity    320 mAh
Earphone battery capacity    30 mAh
Operating time    5 hours / 25 hours (with charging case) / 90 days (in standby mode)
Charging time    approximately one hour