Note: 1. Package doesn't comes with the charger. Please buy a extra one or use a universal USB port adapter or charger for charging. 2.Only supports 2.4GHz wireless band. If router is 5GHz, please switch to 2.4GHz, and make sure DHCP is on. 3. The battery is a backup battery to keep the camera working when the power sudden blackout. We do not promise the working time of the battery. We strongly recommend you to keep the USB power on all the time. Specifications: Pixel:1200 Mega CMOS Video Format:AVI Visual Angle:140 degree Motion Detection:Camera Shooting Compressed Format:H.264 Recording Range:5 Square Meters Consumption:240MA/3.7V Temperature:-20-80 degree centigrade Operating Temperature:-10 to 60 degree centigrade Operation Humidity:15-85%RH Memory Card Type:Micro SD card Maximum capacity of memory card:128GB Player Software:media player Mobile Phone Operating System:Android/iOS Web browser:IE7 and above,chrom,firefox safari.etc Phone Can View Max 4 Clock Cameras At The Same Time. Package Includes: 1*Clock Camera 1*USB Charging Cable 1*Instruction note :4K real-time viewing is 4K pixels, and saving to the memory card is 1080P pixels, Save to the memory card will be compressed, the corresponding pixels will also become weak About the 4k camera: We put a protective film on the camera before shipping. This film is used to prevent scratches on the screen during the shipping process. The protective film should be removed during use.