Thermometer & body tester - the ck-w113 digital wrist band blood pressure monitor sphygmomanometer is an advanced, portable digital device, offering convenient and easy measurement anywhere you go. Ideal for managing health, this monitor employs smart pulse scanning technology, offering precise readings every time. It features a large lcd display screen, allowing old people with poor eyesight to see clearly. And it is capable of storing up to 90 readings from two users. With such good quality and low price, the digital blood pressure monitor has become indispensible for every family. Click and buy now!featuresmade of high-grade material, safe and durable convenient and easy measurement anywhere you go small and compact size smart pulse scanning technology offers you precise readings every time large lcd display screen, allowing old people with poor eyesight to see clearly store up to 90 readings from two users a perfect gift choice for family and friends specificationsname wrist blood pressure monitor display lcd digital display screen measuring principle pulse scanning measurement localization wrist pressure measurement range 0 - 299mmhg pulse measurement range 40 - 165pulses / min pressure accuracy ±3mmhg or ±2% pulse accuracy ±5% pulses / minpower 1.5w wrist circumference 135-195mm cycle memory function double users, each of the 90 set of measurements of memory power source dc 3v automatic power-off no temperature 10 - 40 "ƒ / 50 - 104 "‰ humidity 40 - 85%rh (no condensing) storage temperature -20 - +50 "ƒ /-4 - 122 "‰ storage humidity 15 - 90%rh (no condensing) product dimensions (3.35 x 2.95 x 2.36)" / (8.5 x 7.5 x 6)cm (l x w x h) weight 8.81 oz / 250 gpackage includes 1 x wrist blood pressure monitor1 x english manual .