DM1 3.5-inch Screen Smart Wireless 500X HD Digital Microscope Handheld Portable Children Microscope with Stand 1. Sensor: high-performance photosensitive chip 2. Main control chip: dedicated main control 16Bit DSP 3. Screen size: 3.5 inches high-definition screen 4. Magnification: 500X 5. Lens structure: 2G+IR 6. Field of view: 16 degrees 7. Focusing method and focusing range: manual adjustment, 0-40mm 8. Imaging distance: 3mm to infinity 9. Sensor size: 14" 10. Signal-to-noise ratio: 37dB 11. Sensitivity: 4300mVlux.sec 12. Video recording format: AVI 13. Video resolution: 640x480, 1280x720, 1920x1080 14. Picture format: JPG 15. Picture resolution: 640x480, 1280x720, 1920x1080 16. Working range: 0-10 meters 17. Working time: about 90 minutes 18. Built-in battery: 800mAh lithium battery 19. Charging input: DC 5V1A 20. Working current: 260mA 21.WiFi working environment: Android 4.0 and above system, iOS 8.0 and above system 22. Wireless transmission: support 2.4Ghz wireless transmission 23. Light source: 8 LED lights (adjustable brightness) 24. Digital zoom: multi-stage 25. Image resolution: 640x480 26. Computer interface: USB 2.0&USB 1.1 compatible 27. Dynamic frame rate: 30fs Under 600 LUX Brightness 28. Illumination range: 0-30000 LUX Brightness 29. Support system: Win7, Win8.1, Win10, Vista, Win XP 30. Supported languages: Simplified Chinese, Traditional Chinese, English 31. Scope of application: industrial maintenance inspection, textile, jewelry identification, printed matter, experimental research Packing list: -Microscope x 1 -Bracket x 1 -USB cable x 1 -Installation disc x 1 -Instruction manual x 1