"solution:Jieli 6936D
version:5.0
Bluetooth profile: AVRCP/A2DP/HFP
transmission distance:10m
playing time:3-4h
stand-by time:40h
Earphone capacity:45mAh
Charge case battery capacity: 300mAh
charging time;2h
trumpet:Ø10mm
sensitivity:110±3dB S.P.L at 1KHZ
impedance:32Ω
frequency range:20Hz-20 KHz"