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 .5hour 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