Measures body fat and weight by using foot-to-foot bioelectrical impedance analysis. Prints out weight to 0.2 lb; body fat to 0.1%; fat mass/fat-free mass to 0.2 lb, total body water to 0.2 lb, and basal metabolic rate. Port for computer. Includes 6 AA batteries and one 25'L roll of paper. 440 lb capacity. 13-1/2"L x 12-1/2"W base; 17 lb.