Garmin vivofit jr 2 - https://www.facebook.com/1908833202771249/photos/a.1908834322771137.1073741827.1908833202771249/1908834239437812/?type=3&theater | Facebook
Amazon.com: Garmin vívofit 4 activity tracker with 1+ year battery life and color display. Small/Medium, Black. 010-01847-00, 0.61 inches : Sports & Outdoors