Crosstour CT9300 Action Camera Action Camera 4K, Crosstour Underwater Cam EIS WiFi Dual Screens Remote Control 24MP Ultra HD Touch Screen Camera with LDC 4X Zoom Two Rechargeable Batteries and Upgraded Accessories Kits CT9300 EIS Anti-Shake Technology Action Camera With Dual Screen 4K UHD Video 24MP Photo 4 Feet Waterproof Diving Mode 2021 Upgraded User-friendly Accessory Kits Warm Tips: 1.Support Class 10 or above, 8-64GB micro SD card (NOT included). Please format the card in the camera before using. (This gopro type camera doesn't have internal memory) 2.The sound effect will be influenced in the waterproof case. Please do not put it in the waterproof case for a better sound recording. 3.Dual screen cannot be used at the same time. Please press and hold Down button for 3 seconds to switch between the front screen and the rear screen. 4.Recording Time: Each battery for 1080P/2.7K About 180 minutes, 4K About 90 minutes. 5.The quality of the video/picture/sound will be better when playing it back on your phone/computer. 6.The camera resolution will be 1080P(Default resolution) if you are using this camera as a PC cam. 7.For all action cameras in 4K resolution, the EIS and the Lens Distortion can not be used at the same time.