FDA approved and CE certified. Don't take chances with non-FDA approved devices Easy to use, with automatic inflation and reading of blood pressure and heart rate Easy-to-read big 4 inch LCD display 3.31 x2.17 inch Irregular heart beat detection ,60x2 memories for 2 users ,last 3 results average WHO blood pressure classification indicator ,low battery indicator , auto shut off function conserve your battery life 1-Year Warranty: Money-back satisfaction guarantee Note Requires 4 AA batteries (not included) or AC adaptor 6V1 A (available separately).