Item Type: Fingertip Video Controller Material: ABS, Silicone BT Version: BT 4.0 Control Distance: 10 Meters / 32.8ft Remote Control Battery Type: 1 x 20mah Polymer Lithium Battery(Inbuilt Battery Included) Application: Video Flipping/Reading/Selfie Control 1BT4.0 Connection: This phone remote control adopts stable BT4.0 connection, connect and use, providing stable and flexible control. 2App Paging Turning: This fingertip video controller can help realize App page turning, and your give a "like" to video via twice press. 3Wide Application: This phone remote shutter is suitable for various video App, camera App and book reading App. 4Ergonomic Design: This phone camera shutter also features ergonomic design that is fit for finger of different width. 5USB Charge: This remote shutter can be easily charged via USB cable and interface. Wireless connection supports up to 32.8ft control distance.For IOS system is only available after setting: setting, auxiliary function, touch control, touch control on.1 x Fingertip Video Controller 1 x USB Cable 1 x User Manual