This is a media control button that allows you to play or pause music, up and down songs, and increase or decrease multimedia volume.<br> Features:<br> 1. No need to touch the smartphone/tablet. With this wireless media button, you can control music, take pictures and wake up the smart assistant with one key.<br> 2. There is a base, which is convenient to fix on the steering wheel.<br> 3. Use the attached base to connect the media button to the handlebar of the bicycle, keeping your sight on the road, and placing your hand on the handlebar.<br> 4. If you don't touch the button for about the 30s, it will automatically enter sleep mode.<br> 5. Easy to use, small, and compact, with a wireless range of up to 10 meters.<br> Specifications:<br> Size: Diameter: 36mm, Thickness: 8mm<br> Battery model: CR2025<br> Compatibility: iOS7.0 or for Android4.4+<br> Wireless range: 10 meters<br> Sleep mode: 30s<br> Package Includes:<br> 1 * Mobile phone remote control<br> 1 * Manual<br> 1 * Tape<br> Notes:<br> 1. Please allow 0-1 inch error due to manual measurement. Thanks for your understanding.<br> 2. monitorings are not calibrated the same, the item color displayed in photos may be showing slightly different from the real object.