Sleep earbuds
Bluetooth Version: 5.3
Battery inside earbuds: 60mAh
Working time: 3-5hours
Standby time: 168hours
Impedance: 32ohm
Frequency: 20-20kHz
Sensitivity: 85+-3dB
Working distance: about 10m
Charging time: about 1-2hours
Charging conntector:Micro USB
Charging cable included
Color: Black