Feature & Function of the Product: 1. One-Step Pairing & LED Display Technology – Flip the cover of the earbuds case, closer to your Bluetooth devices and automatically connect without any issue. LED Battery Display allow display the power percentage of your headsets. 2. High Adaptability – Compatible with IOS and Android system, acceptable with most electronic devices in the market. There are touch control button on the earbuds, always allow user to play, pause, forward, backward on music, allow user to answer and hang up phone call. 3. Ergonomic Design & Unimaginable Listening Experience – Those earbuds are ergonomic angle design, with high quality silicone material manufacture and always have your size of ear tips (L M S) Noise cancellation earbuds can provide you the greatest listening experience. 4. Portable Mini Size & Multiple Proof – Mini size of earbuds and case make user easily carry out for outdoor, they won’t easily fall off when running, hiking and jogging.