To switch between LB and KG, hold down the power button Save on overweight luggage fees Compact, portable and lightweight Weighs luggage to 110 lbs./50 kg Number of Batteries: 1 Battery Type: Alkaline Manufacturer Warranty: 90 Days Power Source: Battery (included) Measurements: 4.5 Length/Inches, 1 Height/Inches, 1 Width/Inches Maximum Weight Limit: 110 Lbs Weight (lb.): 4.5 Lb Base Material: 50% Plastic, 50% Steel Battery Size: Cr2032 Care: Wipe Clean Country of Origin: Imported