VEVOR Electric Stair Climbing Dolly, 880lbs Electric Stair Climbing Hand Trucks with 157.5in Rope & Extendable Handle, Heavy Duty Stair Climber for Warehouse Logistics, Moving Furniture(Black)Efficient Stair ClimbingSmooth & Secure Stair ClimbingUpgraded MaterialsEasy to OperateReliable DesignNon-Slip Stair Climbing WheelsMotor Dustproof & Waterproof: IP55,Charger Input Voltage: 100-240V,Color: Black,Handle Height: 48" - 60.2" / 1220 - 1530 mm,Max Load Capacity (Climbing): 880 lbs / 400 kg (Stair slope approximately 30°),Product Dimensions: 60.2" x 22.1" x 12.4" / 1530 x 560 x 315 mm,Battery Type: Lithium-ion battery,Charging Time: 3.5 hours,Power Supply: AC 120V, 60Hz,Operating Noise: ≤50dB (tested at 1-meter radius),Main Materials: Steel, Rubber, Plastic,Cargo Plate Dimensions: 17.3" x 9.8" / 440 x 250 mm,Item Model Number: SC216L-200,Product Weight: 95 lbs / 43 kg,Climbing Wheels: 3" Inflatable Rubber Wheels x 2,Endurance: 1600-1800 steps (full charge, 300 lbs load, 30° stairs),Speed Settings: 28/45 steps/min,Max Climbing Step Height: 9.1" / 230 mm