Sportcraft EX-150 Digital 4 Function Tally Counter

I was really excited to get this item. It had a pull tag to start the battery so I knew it was a new battery. It is really easy to set and use. However, it doesn't turn off or go into a sleep mode and the battery only lasted a few days. If it was like a watch battery and you change it once a year that would be great but I haven't changed it yet to find out if this is the case. Also, I can't set the timer to start when I do a lap. There may be a way but I didn't see it in the instructions. It feels really good in my hand and it was easy to use. So I love the concept of having this digital lap counter, it just didn't function as I thought it would.