1. PMMA lens, increase light transmittance and light input2. 2.4-inch high-definition color screen, collimating focusing lens, dual photosensitive holes3. Electronic universal horizontal bubble, 360-degree accurate positioning4. Photography + dual power supply: small optical system, electronic angle sensor, electronic universal horizontal bubble, camera assisted aiming, live voice broadcast5. Photography + dual power supply + Bluetooth: large optical system, electronic angle sensor, electronic universal horizontal bubble, camera assisted aiming, real voice broadcast, Bluetooth mobile APP6. Camera + video + bluetooth + drawing: large optical system, electronic angle sensor, electronic universal horizontal bubble, camera assisted aiming, Bluetooth mobile APP, dual processor, 4x digital zoom, photo/audio/video, music video playback , 16G storage space, trapezoidal measurement7. Scope of application: distance measurement / area volume measurement / Pythagorean measurement / Bluetooth drawing8. Battery capacity: photography + dual power supply / photography + dual power supply + Bluetooth: 2400mah; camera + video + Bluetooth + drawing: 4800mah9. Power mode: USB charging / built-in lithium battery10. Measurement mode: Length/Area/Volume/Pythagorean/Angle Height/Wall Speed ??Measurement11. Measuring range: 80 meters, 120 meters, 200 meters12. Charging voltage: DC 5v13. Charging current: 1A14. Charging power: 5w15. Dimensions: photography + dual power supply / photography + dual power supply + Bluetooth: 12.5 x 5.4 x 2.7cm, camera + video + Bluetooth + drawing: 14 x 5.8 x 2.8mm16. Weight: about 160gSpecification: Package Weight One Package Weight 0.20kgs / 0.45lb One Package Size 16.5cm * 9cm * 5cm / 6.5inch * 3.54inch * 1.97inch Qty per Carton 146 Carton Weight 30.00kgs / 66.14lb Carton Size 50cm * 50cm * 60cm / 19.69inch * 19.69inch * 23.62inch Loading Container 20GP: 177 cartons * 146 pcs = 25842 pcs40HQ: 412 cartons * 146 pcs = 60152 pcs