Ultra Long Battery Life-Our product comes with a charging case that fully charges the ring remote five times. Each ring remote has a maximum working time of 14 hours, so with a charging case it can last up to 86 hours.Widely Compatible-Linked via bluetooth, compatible with the iPhone, iPad, iPod models, and Android smartphones and tablets. (iPhone and iPad need to open Settings>Accessibility>touch>turn on Assistive touch before it can be used normally.)Cell Phone Camera Bluetooth Remote: You can use it to take pictures and record videos In photo or video recording mode on your phone, just long press either button up or down on the ring within a distance of 10 metersTik Tok Page Turner: You dont need to use your finger to slide videos when enjoying Tik Tok. You also can lay in bed and scroll throught Tik Tok without getting hand to operate page up and down, volume up and down, play and pause, send like. (Can't conrtol music playing apps)E-Books App Page Turner-Multifunctional Bluetooth remote page turner, applicable to most popular Short Videos and eBooks APP on cellphone, such as Kindle. (Please Notice!! It does not work with Kindle Device, Kindle paperwhite!! Only work on Kindle App on iPad/iPhone.)