These little guy's are great. I used it to count reps on all sorts of equipment. With the strong magnet back, you can stick it to any machine or free weight to count reps, calories and steps taken. Brand new unopened and batteries are included :')

• COMPACT: sitting at two inches in height, this device will have minimal interference with your exercises
• EASY TO USE: unlike other fitness monitors, this little device can be easily attached and detached with its built-in magnetic back
• VERSITILE: tracks your workout time, repetitions and calories burned. You can even use it as a pedometer.
• Sport Type: Exercise & Fitness