1Compatible for fitbit flex 2, it can hoid it firmly with its pendant, durable and not easy to fall. 2Fashion metal necklace can match your favorite jewelry and clothing well for outdoor activity. 3Made of high quality copper, wear resistant and sturdy, not easy to fade and long service life. 4Provide exquisite and surprising gifts for your best friend, lover, girlfriend, wife, mother, fiancee, and grandmother. 5The necklace is suitable for many festivals, birthday, holiday dances and other party conditions.