Adidas miCoach Speed Cell for Apple Ipod and Iphone Made for iPod Touch (2nd, 3rd, 4th Generations) and iPhone (4, 3GS, 3G) Includes: miCoach SPEED CELL &amp; miCoach CONNECT Battery Life &gt;5 months (5 x 1h workouts per week) Power Supply-Replaceable CR2032 lithium battery SAD00124