Bluetooth version: 4.2V
Frequency range: 2.4-2.48GHz
Transmission distance: up to 10m
Faster transmission and lower power speaker diameter: ø6mm
Frequency response: 20-20kHz
Battery: Li-polymer (power bank 600mAh, earphones 55mAh)
Playing time: up to 10H with power bank box(2.5-4 hours*4)
Standby time: up to 120H
Charging time: 1.5-2H
Vibration alerts
IPx4 sweat-proof
Battery status display on Android/iOS
