Features: Eight bright white LEDs can be used day and night. Adjustable 0x-1000x focus, making single-hand operation more convenient. Universal rotating base, more stable observation. USB interface charging, get rid of cable trouble. Support tablet-PC/intelligent phone, WiFi connection more convenient, while supporting photo/video. Widely used, can be used in printing, biological research, learning observation, beauty and other aspects. Specifications: Item type: Electron Microscope Color: Black Magnifying-power: 0X-1000X Field angle: 16°(It depends on the lens) LEDs quantity: 8pcs Bright white light(Bright white light) Bright white light: Manual adjustment, 0~40mm The imaging distance: 3mm to-infinity Sensor size: 1/7.5" SNR: 45db Sensitivity: 3V/lux-sec Video recording format: MP4 Video resolution: 640*360 Photo format: JPG Working range: 0-10m(Empty-scene) Power-supply-mode: 650mAh built-in lithium-battery WiFi work environment: Android 5.0 and above, IOS 8.0 and above WiFi work environment equipment requirements: Sopport 2.4gigahertz(8201.11b/g/n)Wire-less data transmission equipment Operating temperature: 0℃-40℃ Storage temperature: -10℃~60℃ Operating humidity: 30-60%RH Storage humidity: 10-80%RH Package weight: 188g/6.63ounces Package size: 150*100*50mm/5.9*3.93*1.96inches How to download APP: for iOS: search and download"HVviewing" applicationon on APP store or scan the below QR code for Android: scan QR code and choose the proper version-"Google-version" for international users, "China version" for China users; or input website in the browser to download Package list: 1 * Electron Microscope 1 * USB cable