U-pro-ENC

Bluetooth 5.3
Ultra-long battery life
master-slave switching
Cobalt Polymer Battery Power Display Touch Operation Waterproof Charging Stability Real Brass Ring Speaker
1:1 in-ear comfort Signal stability and anti-interference All-round testing (drop, salt spray, high and low temperature, plug test, etc.)
Certification: CE, FCC, ROHS, Battery MSDS, BQB, ISQ900