Features 1, Fast, accurate and reliable 2, Rechargeable battery 3, Light and practical, easy to carry 4, Operation modes: Self-leveling Mode,Manual Mode,Pulse Mode 5, It can be used for Door & window installation, Hanging decoration, Woodworking decoration, Wallconstruction etc.Specification Item Model:SW-331G Accuracy:±3mm/10m Product Type:2 Lines Laser level Leveling Range 4°±1°Laser Type:LD Green 520nm Leveling Time: ≤3s Laser Class:Class II Extension Angle:H&V: 110° Laser Power:15mW×1 Ingress Protection:IP54 Charge Mode:USB-C Charging Socket Power Source:3.7V 1400mAh Li-ion Storage Temperature: -10°C~50°C Operation Temperature: -10°C~50°C Material:ABS Plastic Product Weight/Size 241g/75x64x77mm Type :Vertical & Horizontal Lasers Package Weight /Size:500g/17.5x15x7.5cm Package 1*Level Meter1*User's Manual1*USB-C Charging Cable1*L-BracketSpecification: Package Weight One Package Weight 0.50kgs / 1.11lb One Package Size 17.5cm * 5cm * 7.5cm / 6.89inch * 1.97inch * 2.95inch Qty per Carton 60 Carton Weight 30.00kgs / 66.14lb Carton Size 68cm * 19cm * 29cm / 26.77inch * 7.48inch * 11.42inch Loading Container 20GP: 711 cartons * 60 pcs = 42660 pcs 40HQ: 1652 cartons * 60 pcs = 99120 pcs