Brand: Fitbit Style Number: FB301C Color: Charcoal Condition: New in box, never used (has been stored, so may need new battery) Zip tracks steps taken, calories burned and distance traveled.; Bluetooth 4.0 automatically syncs data to your computer or other device.; Set goals, view progress on the LCD display and earn badges as encouragement.; Rain, splash and sweat-proof device ensures durability.; Replaceable lithium battery lasts up to six months.; Zip tracker with wireless sync dongle; Belt clip; Battery door tool; 3V ''CR2025'' lithium battery; 1.4''H x 1.1''W x .38''D