Features Bluetooth connection: The controller is equipped with Bluetooth 5.3, which makes the control more convenient. Multiple functions: The controller is functional, can be used for electronic music score, electric book, PPT, turn the picture page, also can be used for reading and spinning the short video application. Wide Compatibility - The driver is compatible with multiple operating systems. HIGH STRENGTH - The housing is made of excellent ABS material, which is resistant to drops and abrasions, which ensures long-term service. LONG LASTING BATTERY: Built in rechargeable lithium battery, with super long life, can be used continuously for 73 hours when fully charged. Specification: Item Type: Bluetooth Multimedia Controller Material: ABS Battery: 1 rechargeable lithium battery, battery capacity: 230 mAh (built-in battery) Bluetooth version: Bluetooth 5.3 Resistance: 73 hours of continuous use Package List: 1 x Bluetooth multimedia controller 1 x Charging Cable 1 x Manual Note: For I OS 13 and higher systems it is necessary to activate the auxiliary touch function (Settings, Auxiliary Functions, Touch, Auxiliary Touch, Activated). Package List 1 x Bluetooth Multimedia Controller 1 x Charging Cable 1 x Manual