PoolMate watches offer functionality and features that can really help you improve your training effort in the pool and reap the rewards. Whether you swim a couple of times a week for fitness, or train extensively for competition, benefits can be had in a short time. PoolMates can help you achieve a greater understanding of your training progress over time in order to get the most out of each session and improve going forward. These watches contain miniature accelerometers which are also found in footpods for running. The accelerometers sense the motions of your arm in the pool and the watch translates this into your lap and stroke count.