Electric Stair Climbing Dolly, 880lbs Electric Stair Climbing Hand Trucks with 157.5in Rope and Extendable Handle, Heavy Duty Stair Climber for Warehouse Logistics, Moving Furniture(Black) Efficient Stair Climbing Smooth and Secure Stair Climbing Upgraded Materials Easy to Operate Reliable Design Non-Slip Stair Climbing Wheels Motor Dustproof and 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