Charm to Accessorize the Fitbit Flex and Other Fitness Trackers - The SIMPLICITY Charm in Gold, Hematite or Silver to Dress Up Your Favorite Fitness Tracker Compatible with the Fitbit Flex, Fitbit Flex 2, Fitbit Alta, Jawbone Up or Xiaomi Mi. SIZE: 1.8 long x 0.8" wide *approximately Beautiful & high quality, this is a great alternative to more expensive Fitness Tracker Jewelry! Ideal to wear on just about any occasion- dates, parties, to the office, weddings or any event! This product is not an official product of Xiaomi, Jawbone or Fitbit Inc. Band and Activity Tracker not included.