TOPK F22 TWS bluetooth 5.0 True Wireless Earphone LED Display Button Control Sports Headphones With

FEATURES:
- LED battery?display, intuitive to know the battery life.
- bluetooth 5.0, more stable and faster connection.
- Life?waterproof, no fear of rain and sweat.
- The wireless ear buds turn on automatically when being fetched out from the case, and connect to the last connected bluetooth device automatically as well.

SPECIFICATION:
CPU frequency: 96MHZ
Working voltage: DC 2.2V-5.5V
Signal to noise ratio: a???92dB
Effective distance: 10M barrier-free
Frequency response scope: 20HZ-20KHZ
Sensitivity: 98dB
Nominal impedance: 32??
Transmission power: Class 2
Headphone battery capacity: 300 mAh
Charging battery capacity: 4
Charging input: 5V / 500mA
Charging time: about 2 hours
Hours of use: 8-10 hours of talk, 5-7 hours of music playback
Standby time: 10-15 days
Weight: about 35 g

PACKING LIST:
2*Earphones
1*USB charging cable
1*charging case
1*Manual