1. Small and portable, the data is mastered in one hand, intelligent and easy to use 2. Human-machine interconnection, one key to wake up the smart assistant 3. Low distortion optical lens, greatly reducing the influence of ambient light 4. Mobile terminal design, 10 minutes on-site drawing 5. Bluetooth board: millimeter-level optical system, Swiss ST speed calculation chip, ROHM safety laser, horizontal screen large font design, multiple modes and units, wall speed measurement, Bluetooth data transmission, CAD/3D drawing, flat floor plan, Software and hardware design, data cloud synchronization, sunshine analysis, knowledge protection APP permissions 6. Precise version: millimeter-level optical system, Swiss ST speed calculation chip, ROHM safety laser, horizontal screen large font design, multiple modes and units, wall speed measurement 7. Scope of application: distance measurement / area volume measurement / Pythagorean measurement / Bluetooth drawing 8. Battery capacity: 3.7V 850mah 9. Power mode: USB charging / built-in lithium battery 10. Temperature range: 0-40 degrees Celsius 11. Measuring range: 40 meters, 50 meters, 60 meters 12. Protection class: IP54 13. Use: measure horizontal and vertical 14. Charging power: 5w 15. Charging voltage: DC 5v 16. Charging current: 1A 17. Packing list: host, user manual, color box, flannel bag, data cable 18. Dimensions: 100.3x33.4x18.3mm 19. Weight: about 160g