Product Details:

Bluetooth Version: 5.0
Frequency range: 2.4GHz-2. 48GHz
Support protocols: A2DP、AVRCP、HSP、HFP
Frequency response range: 20Hz-20KHz
Standby time: about 1000 hours
Music/call time: about 5-6 hours.
Charging time: about 1.5 hours for earphones and
about 3 hours for charging box
Input voltage/current: 5V/ > 500mA
Output power: 7mW+ 7mW

Packing list: earphone*1, manual*1, earplugs of 3 sizes*1, USB TYPE-C charging cable*1