JVC Supraaural Bluetooth Headsets let you wirelessly listen to your favorite songs, delivering dynamic sound reproduction with 30mm neodymium driver units.The S40BTs have a Bass Boost function for really dynamic bass sound and are easy to carry because of their foldable design.17 hours of audio time through the built-in rechargeable battery and there is also a 4 button function / microphone function (via Bluetooth). The S40BT is available in 2 colors.

- Dynamic sound reproduction with 30.0mm driver unit

- Bass Boost function for dynamic bass sound (on/off)

- 17 hours of listening with built-in rechargeable battery

- Four button operation/mic function (via Bluetooth)

- Flat-foldable design for ease of portability