Bluetooth chipset: 5.0 + EDR
Working range: 12-15 meters
Frequency range: 20HZ-20KHZ
Headphone battery: 55mAh
Charging box battery: 400mAh
Microphone sensitivity: 42db
Drive sensitivity: 98db ten-5db.
Earplug working time: 4-5 hours
Standby time: 150 hours
Function: power display, call function, support music
