Xtreme Cables XFit Fitness Watch for Smartphones - Dark Gray Wireless Activity Tracker with Display.LIVE.TRACK.INSPIRE. Track Steps,Calories Burned,Track Distance ,Active Time,Digital Watch. Digital screen displays live progress. App is required to set up and record tracking history. Wireless Activity Tracker with Display.LIVE.TRACK.INSPIRE. Track Steps,Calories Burned,Track Distance ,Active Time,Digital Watch. Digital screen displays live progress. App is required to set up and record tracking history. Wireless Activity Tracker with Display.LIVE.TRACK.INSPIRE. Track Steps,Calories Burned,Track Distance ,Active Time,Digital Watch. Digital screen displays live progress. App is required to set up and record tracking history. Compatible with: Apple iOS 6+ App is required to set up and record tracking history Wirelessly sync data to app via Bluetooth