Product in doctor's offices and hospitals. The kit contains everything you need to get started with your blood pressure at home. It gives you professional accuracy without the need for electronics or batteries. The Deluxe Elbow Cuff fits arm circumferences of 13 to 17 inches. Item Type: Blood Pressure Model Number: B06 Use: ARMA Range: 0-300mmHg Bell Head: For Professional Fetal Horn Listening Color: 0cm2SS1 Material: 0cm2SS Package Contents: 1*Manual Arm Blood Pressure with Carton Package Only the above package contents, other products are not included. Note: Light photography and different displays may cause the color of the item in the picture a little different from the real thing. The permissible measurement error is +/- 1-3 cm. Our customer service team consists of experienced, professional and responsible staff. They will do their best to solve your problems and let you feel our sincerity and intention. Buying our products means choosing peace of mind and peace of mind.