Description-Type- Bluetooth headset

Bluetooth version- V5.0

Bluetooth distance- 10 meters

Charging time- about 1-2 hours

Standby time- about 60 hours

Music time- about 3 hours

Call time- about 4 hours

Audio transmission format- HFP / A2DP / HSP / AVRCP

Headphone capacity- 45mAh

Charging box capacity- 350mAh

Working voltage- 3.2 - 4.2V

Charging voltage- DC5V

Frequency- 2.4-2.48 GHz

Speaker impedance- 32Ω

Speaker bandwidth- 20-20KHz

Speaker sensitivity- 105dB

Microphone sensitivity- -42 /- 2db

Note - If the seal is broken then the product can't be returned, unless there is a manufacturing defect.