The T-16K and T-16LB are the most popular and widely used back, leg and chest dynamometer/strength testers in the world. Manufactured in Japan they are the most accurate with a range of up to 300 kg with 1 kg resolution. They are very durable with a protective clear cover over the pointer. Pointer retains maximum reading and can then be returned to 0 for the next test. This is the kilogram version. For the pounds model see the T-16LB One Year Warranty