The hook is made of durable, rust-resistant stainless steel. It has a lock function that hides the hook when folded, making it safe and portable. The grip shape makes it easy to apply force, and is easy to hold. Measuring range: 1.8 - 66.1 lbs (50 - 30 kg). Minimum display 0.4 oz (10 g). Indicated unit: kg, lb. LCD blue backlight. ●Auto off (after 60 seconds of LOCK display). ● TARE (zero setting) & hold function. Includes a low battery indicator. Battery replacement screwdriver included.