Bluetooth version:5.2
Speaker size:12mm moving coil unit
Frequency response:20Hz~20kHz
Sensitivity:105dB
lmpedance:16Ω
Headphone battery capacity:40mah
Headphone charging time:within 1 hours
Charging Box battery capacity:300mah/100mAh
Charging time of charging compartment:within 2 hours
Call time:About 6 hours
Play time:About 6 hours
Standby time:200h

Products include
1 * One pair of Bluetooth headsets
1 * Charging box
1 * Charging cable
1 * User Manual
6 * Ear cap