1. Measuring range: 0.05-40 m/0.05-60m/0.05-80m/0.05-100m2. Measuring accuracy: fluctuate within 10mm3. Class II laser: less than 1 MW4. Laser type: 620-290nm5. Operating temperature: 10-40 degrees celsius6. Storage temperature: 20-70 degrees celsius7. Power supply: AA batteries x 2 (not included in shipment)8. Dimensions: 115 x 50 x 23mm9. Weight: about 155gSpecification: Package Weight One Package Weight 0.18kgs / 0.40lb One Package Size 12cm * 6cm * 3cm / 4.72inch * 2.36inch * 1.18inch Qty per Carton 172 Carton Weight 30.00kgs / 66.14lb Carton Size 50cm * 50cm * 60cm / 19.69inch * 19.69inch * 23.62inch Loading Container 20GP: 177 cartons * 172 pcs = 30444 pcs40HQ: 412 cartons * 172 pcs = 70864 pcs