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Sony NW-WS623 Waterproof Bluetooth Headset Questions & Answers

Sony WS623 has 4GB internal memory and you can further expand it up to 16GB with the help of MicroSD card. 

Customer Also Asked

No. It does not have remote control.

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

Yes, you can connect it with phone and talk and can use as a normal Bluetooth headset.