Due to State and Federal Law, we sell Syringes and Needles only to the Medical Facilities. The MF-180 features simultaneous display of heart rate and % of maximum heart rate, calories burned during exercise, stopwatch with simultaneous display of heart rate, automatic calculation of % of maximum heart rate, (after entry of a profile; age, weight and sex), out-of-zone alarm * Lap mode * No chest belt required * Includes 2 CR2032 Batteries * Electro-Luminescent back light * 1 Year Warranty Shipping Carton Size: 12"L x 10"W x 6"H