For a truly wireless listening experience, the dynmx earbuds provide a simple linking system compatible with any Bluetooth enabled device for effortless streaming of your personal playlists and podcasts. With built-in rechargeable batteries in the charging case and wireless charging functionality in the earbuds, you can listen to your music freely and without the restriction of wires. Each complete charge provides you with 4 hours of uninterrupted playback, complete with a micro USB cable for ease of recharging from an electronic device. The silicone earbuds provide soft and comfortable wear suitable for all day use, so you can indulge in complete music enjoyment.