--Important Notes: 1. Please don't buy it for Kindle device, it only works for kindle apps on cellphone/tablet. 2. When you should replace the battery. a. It cannot be turned on after tried to turn on and off several times. b. It can be turned on, but the bluetooth connection will often drop or it cannot work as normally. 3. When it works for iPhone or for iPad , the below settings must be done: a. Please turn "on" the AissistiveTouch on your phone. b. Ajust the TRACKING SENSITIVITY to 50%. (Settings>Accessibility>Touch>AssistiveTouch>TRACKING SENSITIVITY) --Function Description: 1. Page Turner Remote / Powerpoint Remote: a. Open an eBook( or a slideshow) on cellphone. b. Press "Left"/"Right" button to turn page. For some apps, you need to press "Up"/"Down" button to turn page. 2. Remote for TikTok (or for Youtube Shorts): a. Open "TikTok" on cellphone. b. Press "Up"/"Down" button to scroll up/ down videos. c. Press "Function Button" to Play/Pause videos. Double-Click it to thumb up the video. 3. Camera Remote: a. Open "Camera" on cellphone. b. Hold on "Up" or "Down" Button for 3 seconds to take photos/take videos. 4. Volume Control: a. Hold on "Up"/"Down" button to control up/down volume on cellphone.