IP68 Certified: Support underwater remote photo-taking Remote Control Photo-Taking: Compatible with most of the mobile devices on the market, supports remote control photo-taking Underwater Bluetooth Remote Control Photo Taking: Used together with the waterproof case underwater, solve the untouchable issue of waterproof case in water Light and Portable: Mini portable design, carried with you everywhere you go Anti-loss Design: Stable and reliable, convenient for carrying, space-saving Specifications:\r Bluetooth version: Bluetooth 4.0 Width: 36mm Thickness: 10mm Anti fall: 10ft Material: TPU+PC Waterproof: 48ft Frequency: 2.4Hz~2.4835GHz Effective distance: 10m (30ft) Waterproof depth: 15m Battery model: CR2032 (150mAh) x 1 Instructions :\r 1: Turn on the remote control switch, and the blue indicator light of the remote control flashes 2: Turn on your phone's Bluetooth, search for a new device, and connect 3: After pairing and connecting, open the camera software on the phone 4: IOS mobile phone can directly press the remote control shutter to control the photo 5: The Android phone part can also directly press the shutter to control the photo 6: It can be matched with a waterproof shell, suitable for diving shells