Insert micro SD card and it will work (Max 256GB, not included),Select the mode (Loop recording or take photo),it have three button,1:Video and photo switch.2:product power ON/OFF- (Video Format: AVI. Photo Format :JPG) You can see faces and details clearly even in total darkness. Day photo taking and video recording will be automatically saved to the TF card. Portable small security device camera records 1080P Full HD video with 81°wide angles. Compared with other small camera, it increases the shooting angle, which is wider and more comprehensive. This portable small security KEYCHAIN camera can take 1080P pictures. The quality of the picture is clear and the video recording is smooth without delay. It’s suitable for meeting, travel and evidence collection. Built-in lithium battery, 8-9 hours recording time, It can record while charging. �� Disclaimer Notice Dear Customer, Please note that ReagleTech’s Mini CCTV camera are sold strictly for lawful and responsible use only — such as for personal security, property monitoring, or authorized professional purposes. We do not encourage or support any misuse of these devices for invasion of privacy, illegal recording, or any activity that violates local laws. By purchasing or using our products, the buyer agrees to use them responsibly and acknowledges that ReagleTech is not liable for any misuse, unlawful activity, or consequences arising from improper use of the product. Thank you for your understanding and cooperation. — Team ReagleTech