LotFancy manual blood pressure cuff is certified by the American National Standards Institute. BP cuff 10" to 16", which makes it easy to wear for both the young and the old. The easy-to-read dial is designed so that even seniors with poor eyesight can read it with ease. Durable expanding bulb and high quality latex-free PVC bulb are not easy to break and last longer. Aneroid sphygmomanometer is also equipped with a large bleeder valve with spring, making it easier for users to use.