?Warranty & Service?: 30 days refund or replacement service - Warranty for this blood pressure measurement device is 24 months and the blood pressure checker cuff is for 12 months - We want our customers to be 100% happy and satisfied with our blood pressure tester. ?90 Sets of Memory?: This BP is specially designed for you. Do not worry about the data confusion. When the memory is full, the oldest reading will be replaced by new one automatically. The user can press button M to recall memory after a measurement or when it stands by. It’s the best gift for your mom or dad. ?2 Power Supply Options?: In addition to 4 AAA batteries(Not included), you can also use the USB Connecting(Not included. USB data cable with the same interface can be used in general.) It’s easy and convenient for you to use anytime and anywhere. The device will be switched off automatically if it keeps unused for 3 minutes. ?Adjustable & Soft Standard Cuff?: This automatic BP machine is supplied with the standard cuff which is fit for the upper arm size 22-32 cm (8.7 inch - 12.6 inch) .This length is suitable for most people. The instructions on the cuff will help you use the machine better. ?Easy & Accurate?: One button operation, Large LCD display, USA Medical department approved, BIHS (British & Irish Hypertension Society) approved and CE certified. Average 3 readings-blood pressure classification indication - irregular heartbeat detector - error and low battery indication. Advanced inflation measuring technology can confirm its consistency and reliability.