PRO2 Wireless
 both headphones can be switched freely
 800
 Wireless Phone Popup
 400 mAh >>> 3 hours
 Long time power reserve can be charged in the charging box most of the time
 in-ear detection
 bluetooth version: V5.0
 communication range: s 10m (standard
 env)
 frequency response sensitivity: 20Hz 20kHz
 major secondary key
 sensitivity: 103dB SPL +/- 3dB
 distortion: 5%
 support protocol: HSP/HFP/A2DP/AVRCP
 resistance: 160
 voltage: 3.3-4.2V
 power: 5mw
 touch operation
 Charging box battery capacity: 400mAh Headphone battery capacity: 45mAh
 playtime: about 3.5 hours (80% volume)
 standby time: about 100 hours
 USB charging box charging: about 1 hour wireless charging box charging, about 3 hours
 earbuds button control: touch control
 GPS
 popup
 gps positioning