I bought my first PoolMate quite a few years ago wore it until the strap broke. Got a second one was never quite as good button operation very poor. I ordered the new one but out of stock for 6 weeks so In the end put the old one in the new strap/housing and it worked fine. When the new one arrived absolutely brilliant. Buttons are perfect housing and strap in lovely flexible rubber(?). Perfect? Well almost, the algorithm in the watch is the same in all of them I think and it still misses the occasional length. No biggee for me. Otherwise great watch highly recommended.