With built-in lithium battery, can work continuously for 4 hours. 4.3 inches LCD display, which is convenient to observe more detailed details. Support inserting memory card to take photos and video for network sharing and computer saving. The stand is very stable and you do not have to worry about the shaking outside. Wide usage: board repair, print inspection, money check, learning and exploring, insect observation, jewelry identification. Specification: Material: metal+plastic Main color: black Image sensor: 2M image sensor Magnifications: 50x, 1000x Display: 4.3 inches TFT panel, 16:9 Focusing range: 0-40mm Foucus mode: manual Resolution: 1920*1080, 1280*960, 640*480 Micro TF card slot: support Micro TF card (not equipped with this unit) up to 32GB, including FAT, FAT32 two file formats Data format: JPG/AVI Light source: 8 LED lights (adjustable brightness) Frame rate: 30fps Interface: USB2.0 Lens structure: 2G+IR Aperture: F4.5 Lens angle: 16 Power supply: 1 * lithium battery, 3.7V, 1500mAh (included) Power source: 5V Rated voltage: AC 110-240V Battery continuous working time: about 4 hours Charging time: about 4 hours Stand size: 156 * 122mm / 6.1 * 4.8in Package size: 210 * 210 * 135mm / 8.3 * 8.3 * 5.3in Package weight: 714g / 1.6lb Package Included: microscope*1