Bluetooth Earphones KAKUSIGA KSC-1116 True Wireless with Charging Case 13mm 40/320mAh

Technical Specifications:
Earphone Type: True Wireless Earbuds (TWS)
Wireless Version: V5.3
Working frequency: 2402~2480MHZ
Transmission distance: => 10 meters
Sensitivity: 85dB +- 3dB
Battery capacity: 40mAh
Music time: About 7 hours
Call time: About 6 hours
Charging box capacity: 320mAh
Charging box charging time: About 1.5H