Features: 1. Laser digital display, breaking through the limitations of distance measurement 2. Ranging dual mode, measurement data display, coated manganese steel tape, automatic locking function, zero-point magnetic hook, multiple unit switching, front and back reference selection 3. The buckle fits and locks automatically; the self-locking device is easy to use and does not hurt your hands 4. Dustproof and waterproof, tough and strong coated manganese steel tape 5. High-definition backlight digital display, accurate to millimeters 6. Laser continuous measurement, real-time refresh data, suitable for non-planar ranging, continuous scanning real-time distance Specifications: 1. Working Range: 40m 2. Distance measurement precision: +/-2mm 3. Measurement unit: Options meter(m), inch(in) and feet(ft) 4. Continuous measurement function: Yes 5. Volume measurement function: Yes 6. Laser level: II 7. Laser Type: 635nm,<1mW 8. Automatically cut off laser: 20s 9. Automatic shutdown: 150s 10. Storage Temperature: -20-60 degree C 11. Working Temperature: -0-40 degree C 12. Storage Humidity: 20%-80%RH 13. Battery: 1.5V 2*AAA (not included) 14. Battery Life: 8000 times for single measurementSpecification: Package Weight One Package Weight 0.40kgs / 0.89lb One Package Size 12.6cm * 10.4cm * 7.8cm / 4.96inch * 4.09inch * 3.07inch Qty per Carton 37 Carton Weight 15.00kgs / 33.07lb Carton Size 41cm * 34cm * 25cm / 16.14inch * 13.39inch * 9.84inch Loading Container 20GP: 765 cartons * 37 pcs = 28305 pcs40HQ: 1776 cartons * 37 pcs = 65712 pcs