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Sony NW-WS623 Waterproof Bluetooth Headset Questions & Answers

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Yes, Sony NS-WS623 is meant for the rough usage and it is both - waterproof and dustproof.

Hold down the button 1 for 3 seconds.

You will hear the startup sound.

When the Walkman turns on, the lamp (2) lights up.

Hold down the button (1) for 3 seconds.

You will hear the shutdown sound. Then, the Walkman and the lamp ( 2 )  will turn off.

Yes, it does have fast charging. Charge it for just 3 minutes and it will work for another 60 minutes.