Bluetooth version: 5.3 (jieli ac6973d4)
support protocols: a2dp, hfp, avrcp
battery capacity: 30mah*2 (without protection board but ic)
battery capacity of charging case: 300mah (with protection board)
charging time: 1.5h
talk time: 4.5h
play time: 5h
standby play: 300h
horn parameters
diameter: 10mm
sensitivity: 97±3db
impedance: 32ω±15%, at 1khz
mic parameters
sensitivity: – 39db±2
impedance: 150ω
maximum transmission distance: 10m
bandwidth: 100khz-5khz
voice prompt: supported
multi-point connection: unsupported
wearing method: in ear
user manual: chinese and english
interface: type-c
waterproof rate: ipx5
enc depth (fourl mic for call): >- 35db