Varni B640 neckband is the most useful mobile accessory ever. With deep HD bass, we promise a sound immersion like never before. With a lightweight framework and a built-in microphone, this product gives all-day comfort and will perfectly fit into your dynamic life. This product is extremely durable and sturdy. It will surely last longer than you can fathom. With magnetic metallic earbuds that never stay poles apart, storage is never a problem.B640 is very lightweight compared to other counter products and is comfortable around your neck. Available in regal matte colors, this neckband features lightning speed Bluetooth connectivity. Furthermore, it is equipped with our A2DP technology that allows you to connect to 2 devices simultaneously. A feature you can hardly find in Bluetooth neckbands. And leaving the best for the last, the rechargeable 110 mAh battery with a 1 hour charging time gives you 12 hours of uninterrupted playback