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Sony NW-WS623 Waterproof Bluetooth Headset Questions & Answers

You can check the charging status with the lamp ( 3 ).

While the battery is charging: orange when charging is complete: green

Customer Also Asked

Yes, Sony NS-WS623 does have NFC connectivity option.

No. Sony WS623 comes with non-removable battery. 

Hold down the button 1 for 3 seconds.

You will hear the startup sound.

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