Product specifications: color black size: 23 * 19 * 4 cm weight: 273g Package includes: 1 * Bluetooth pager converter 1 * USB charger 1 * User manual How to use it? 1. Turn on Bluetooth on the host device (Windows PC, Mac, iPad, iPhone, Android card or smartphone). 2.Turn on the bluetooth music pedal using the switch in the upper right corner of the control panel. 3. In the host device's bluetooth settings, select Discover and you will be presented with "Bluetooth Music Pedal". 4.Select "Bluetooth Music Pedal" to connect. 5. The pairing and synchronization process will shine through multiple colors and will take a few seconds and even up to a minute. As soon as the pedal LED stops flashing quickly and the device is "connected", the pedal is completely connected to the host Device paired and ready for use.