Product Dimensions ‏ : ‎ 3.28 x 0.02 x 0.2 inches; 0.63 Ounces Item model number ‏ : ‎ KardiaMobile Department ‏ : ‎ unisex-adult Batteries ‏ : ‎ 1 Lithium Metal batteries required. (included) Date First Available ‏ : ‎ January 19, 2016 Manufacturer ‏ : ‎ AliveCor EKG ON THE GO: Capture unlimited medical-grade EKGs in 30 seconds and get an instant analysis right on your smartphone. KardiaMobile is small enough to fit in your pocket, so you can take it with you anywhere. EASY TO USE: Simply place your fingers on the sensors to detect Atrial Fibrillation, Bradycardia, Tachycardia and Normal Sinus Rhythm. Additional detections and features available with KardiaCare subscription. KardiaCare is not included with this product. TRUSTED BY PROFESSIONALS: KardiaMobile is FDA-cleared and the #1 doctor-recommended personal EKG with more than 100 million EKGs recorded. EKG HISTORY: With the press of a button, email your EKGs to your doctor or save them on your phone, no subscription required. KardiaMobile is COMPATIBLE WITH MOST POPULAR PHONES and TABLETS. To use your Kardia device, you must download the Kardia app on a compatible device running at least Apple iOS 10.3.3, or at least Android OS 6.0. Visit the Alivecor website for complete list of compatible devices. Not recommended for use with pacemakers and ICDs and does not detect heart attack.