Sennheiser MX W1 Instructions for Use - Page 9

̈ Plug the country adaptor into a wall socket. The batteries are being charged. The corresponding LEDs light up. ̈ Charge the rechargeable batteries until the LEDs go off (approx. 2 hours). Note: - The rechargeable batteries of the transmitter and the earphones can also be charged via a computer USB socket. However, to charge the rechargeable battery of the transmitter while listening to music, use the supplied power supply unit for charging in order to avoid hum. - The transmitter has its own built-in rechargeable battery. So it will not drain your audio device's battery. - With a fully charged rechargeable battery, the operating time of the transmitter is approx. 10 hours and of the earphones approx. 3 hours. Charging the earphones on the move When on the move, the earphones can be charged up to three times in the docking station, without the docking station having to be connected to the mains. » Ƹ Ƹ ƺ ƻ 8