The Charder MS 5440 electronic chair and dialysis scale enables the simple, gentle and precise weighing of patients and is an indispensable part of dialysis and intensive care. Easy to move casters and light weight are simply and effortlessly providing with their primary role being to provide excellent patient service Product Description Revolvable arm-rest Foldable foot-rest Lockable four wheels Medical grade anti-shocking caster wheels RS232 data tranmit to PC Durable frame design BMI function HOLD function for weight lock Tare function for weight taring Four 360 degree free swivel caster wheels