1. Rugged and durable, compact and portable, ergonomic grip, accurate and durable2. Infrared pulsed laser, just one touch3. Suitable for outdoor activities and measurement such as golf, hunting, electricity, forestry, etc.4. Anti-reflection green film blessing, 6 times magnification, still clear5. Rotating focus 6 degree diopter, myopia/presbyopia can be observed with naked-eye, no need to wear glasses6. Laser wavelength: 905nm7. Accuracy: 1m8. Objective lens aperture: 19mm9. Eyepiece aperture: 15mm10. Diameter of exit pupil: 3.7mm11. Measuring range: 800m/1000m/1500m12. Material: plastic + electronics13. Temperature range: -10 to 50 degrees Celsius14. Protection level: IP5415. Battery capacity: 750mah / 3.7v16. Power supply: USB charging / built-in lithium battery17. Measuring range: 500/700/1000 meters18. Battery life: Can be charged/discharged 500 times19. Product accessories: Host, cloth bag, USB charging cable, lanyard, certificate and warranty card, manual20. Dimensions: 105x66.4x38mm21. Weight: about 161gSpecification: Package Weight One Package Weight 0.29kgs / 0.64lb One Package Size 16cm * 9cm * 7cm / 6.3inch * 3.54inch * 2.76inch Qty per Carton 40 Carton Weight 15.00kgs / 33.07lb Carton Size 47cm * 30cm * 33cm / 18.5inch * 11.81inch * 12.99inch Loading Container 20GP: 573 cartons * 40 pcs = 22920 pcs40HQ: 1330 cartons * 40 pcs = 53200 pcs