Item type:Mini Bluetooth Earphones Wireless

frequency: 20HZ-20KHZ 

Battery capacity: 300mAh

Bluetooth use band: 2.4GHZ

Microphone sensitivity: 107DB SPL +/-3DB

Playing time: about 2-3 hours

Support protocols: A2DP, HFP, HSP, AVRCP

Charging voltage: 3.3-4.2V

Bluetooth version: Bluetooth V5.0+EDR Binaural call

Waterproof rating: IPX5

Power: 25MW

Charging time: about 1 hour

Transmission distance:15M

Impedance: 32Ohm

Standby time: about 72 hours

Package Include: 2x Mini Bluetooth Earphones 1x Charging Box 1x USB Charging Cable 1x User Manual