Features: 5-key Wireless bluetooth-compatible button remote, for play/pause, previous song, next song, volume up and volume down. BLE5.0 version, stable transmission and almost no lantency, wireless connection range can reach up to 15 meters. Plug and for play, automatic connection, calling reminder, hands-free calling, convenient and fast, safer driving. for iOS and Android smartphones. Comes with a mount bracket, it is convenient to fix on the steering wheel or onto bicycle handlebar. Specifications: Material: ABS Size: Approx. 36x10 mm/1.41x0.39 inch Color: Black, Silver(optional) BLE Version: BT 5.0 Chip Wireless Connection Range: about 15 Meters Package Includes: ​1x Multimedia Button 1x Bracket note: With this bluetoth-compatible media button, you can control music, take photos, and wakeups Siri(For iphoneX/XS/Xmax, you need to press volum up and volumn down for 3 seconds, and when the blue light flashes, then switch the mode to wakeups Siri) Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.