Fangrui Product Details 1. Dm1 3.5-inch Screen Smart Wireless 500x Hd Digital Microscope Handheld Portable Children Microscope Without Stand 2. Sensor: High-performance Photosensitive Chip 3. Main Control Chip: Dedicated Main Control 16bit Dsp 4. Screen Size: 3.5 Inches High-definition Screen 5. Magnification: 500x 6. Lens Structure: 2g+ir 7. Field Of View: 16 Degrees 8. Focusing Method And Focusing Range: Manual Adjustment, 0-40mm 9. Imaging Distance: 3mm To Infinity 10. Sensor Size: 14" 11. Signal-to-noise Ratio: 37db 12. Sensitivity: 4300mvlux.sec 13. Video Recording Format: Avi 14. Video Resolution: 640x480, 1280x720, 1920x1080 15. Picture Format: Jpg 16. Picture Resolution: 640x480, 1280x720, 1920x1080 17. Working Range: 0-10 Meters 18. Working Time: About 90 Minutes 19. Built-in Battery: 800mah Lithium Battery 20. Charging Input: Dc 5v1a 21. Working Current: 260ma 22. Wifi Working Environment: Android 4.0 And Above System, Ios 8.0 And Above System 23. Wireless Transmission: Support 2.4ghz Wireless Transmission 24. Light Source: 8 Led Lights (adjustable Brightness) 25. Digital Zoom: Multi-stage 26. Image Resolution: 640x480 27. Computer Interface: Usb 2.0&usb 1.1 Compatible 28. Dynamic Frame Rate: 30fs Under 600 Lux Brightness 29. Illumination Range: 0-30000 Lux Brightness 30. Support System: Win7, Win8.1, Win10, Vista, Win Xp 31. Supported Languages: Simplified Chinese, Traditional Chinese, English 32. Scope Of Application: Industrial Maintenance Inspection, Textile, Jewelry Identification, Printed Matter, Experimental Research 33. Packing List: 34. -microscope X 1 35. -bracket X 1 36. -usb Cable X 1 37. -installation Disc X 1 38. -instruction Manual X 1