BT version: v5.3. Chip: AC7003.
Supported protocols: Headset, Hands-free, A2DP, AVRCP.
Transmission distance: 10m.
Transmission frequency: 2.4GHz.
Speaker unit: 14.2mm.
Impedance: 32Ω ± 15%.
Frequency response: 20-20000Hz.
Sensitivity: 92dB ± 3dB.
Battery capacity: 130mAh.
Charging input: DC5V, Type-C.
Charging time: about 2 hours.
Talk / music time: 20 hours. Standby time: 350 hours.
Earcups with magnets. Silicone neck band.
Battery display: supports for Apple phones and some Android phones.