- Stylish earphones with phone function ,Wireless Bluetooth ,Don’t let wires hold you back & go all in , ,8 hours of non-stop music ,Workout for a whole week without recharging , ,Sweat proof ,Don’t be bothered by sweat & keep working out (IPX2-rated) , ,CHARGING TIMES ,0.5 A charger: 10 min , ,TECHNICAL BITS ,Bluetooth 4.1 ,80 mAh rechargeable battery ,Built-in remote* & microphone ,9.2 mm drivers ,Frequency range 20 Hz – 20.000 Hz ,Impedance 16 Ω ,IPX2-rated (sweat proof) ,Weight: 17g