We used this lightweight scale to weigh a 25-lb. weight, a 50-lb. weight, and three human subjects, 50 times each. Results were then compared with readings from a professionally calibrated hospital scale, and this scale¿s worst average reading was still 99.9905% accurate. Advanced strain gauge technology rapidly takes 1,000 readings with each weighing, and the average is instantly displayed. Lithium battery has a 10-year life if used five times every day. Specially treated beechwood platform withstands moisture and humidity. 350 lb. weight limit. 1 3/4" H x 11 3/4" W x 14 1/2" L. (3 lbs.)