Wrist Blood Pressure GMT - 601 1.GMT-601,the wrist digital blood pressure are convenient for home use, small and light. 2.It's noninvasive,means no part of the monitor enters your body,and provide systolic , diastolic and pulse measurements.These are very important for home healthcare . 3.GMT-601 measure blood pressure and pulse by using what’s called oscillometric method like the one using in hospitals . While it works automatically , users needn 't fill the cuff manually , and read all out directly. 4.Battery low display, then users will know when it need a new battery. 5.Although home use, we seriously developed it strictly according to the hospital standard for sphygmomanometers. Specifications : Measurement Method : Oscillometric Display: Liquid crystal digital display Measruing range Pressure: 0 - 300mmHg ( 0kPa~39kPa ) Pulse: 40-200 beats/Minute Accuracy Pressure: within+-3mmHg (0.4kPa) Pulse: within +-5% Min. scale: 0.1kPa/1mmHg Memory: Stores up to 60 measurements Automatic power Off: About 30 seconds after measurement is complete Battery Type: 2 AAA Batteries Battery life : about 2 months with 3-min. usage per day Storage condition : (-4~131)˚F, (10~95)%RH Operation condition: (41~104)˚F, (30~85)%RH Dimensions (approx.): Monitor: 65?8?8mm Cuff : fits wrists 13-19cm Weight (approx.): 128g (including batteries)