B7 Bluetooth binaural wireless headset

B7 true wireless semi-in-ear bluetooth headset
Speaker size: Φ13.2mm
Headphone size: 40X18X16mm
Charging compartment size: 61X46X25mm
Bluetooth version: 5.0+EDR
Bluetooth support: phone hands-free
Frequency response range: 20HZ-20Khz
Bluetooth support protocol: AVRCP/A2DP/HSP/SPP
Transmission frequency: 2. 4GHZ-248GHZ
Bluetooth receiving effective distance: 10m
Battery capacity: 30mAh
With microphone: omnidirectional
Bluetooth working time: continuous playback 4-5h
Bluetooth standby time: 100H
Input voltage/current: equipped with dedicated charging compartment
Charging the headset in the charging compartment: 4-5 times
Charging warehouse standby time: 60 days