Special designed for fitbit flex sports tracker. Quality silicone material and lightweight, Easy to install and carry around. the cable is Only for charging, no RESET function. Accessories only, the flex bracelet monitor in the pictures is not included. The magnetic clip can adsorb closely your Fitbit Flex Sports Activity Tracker Monitor. prevent your fitbit flex tracker monitor from missing. Package includes a black clasp and a usb charging cable for fitbit flex Activity Bracelet.