Bluetooth version: v5.0
channel system: stereo
battery capacity: 35mah, 3.7v/300mah
drive unit: 13mm
charging time: 1h
call duration: 3.5h
music duration: 3h
frequency response
range:20hz -20khz
speaker impedance: 16ω ± 10%
s...
Condition: Brand New,
Connectivity: Wireless