Sennheiser Digital Wireless System MX W1 - Manual (Page 9)

8
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Plug the country adaptor into a wall socket.
The batteries are being charged. The corresponding LEDs
light up.
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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.
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