Keep track of your heart rate and rhythm with this portable Electrocardiogram. This rechargeable heart-monitoring device records results so you can share them with your doctor. Quick, painless, and easy to use, with a clear and easy-to-read display. FDA-registered device comes with carrying pouch and is small enough to bring with you anywhere. Plastic, Electronics, Metal, Paper. 2¾"H 1½"W Requires 1, 3.7V 430 mAh Polymer Lithium battery. Included: comes with charging cord. FDA listed.