Sports watches are very helpful, especially if they have the correct features for your sport.
For example, the JWF Pulse Pro found at http://jwfselling.com/jwf-fitness/66-jwf-pulse-pro... is a digital sports watch that has a stopwatch, timer, split, alarms and so on. This makes it ideal for workouts, running, cycling etc.
It also has a more advanced feature - a built in heart rate monitor. This means that before/during/after your exercise, you can check your heart rate just by placing two fingers on the metal sensors either side of the watch face. This can show you how hard you have worked, and how much progression you are making.
Another great feature in a good sport watch is having a backlight. A lot of people tend to run in the early morning, or late at night. If your sports watch doesn't have a backlight, it can be very difficult to see what time/pace you are running at, which could jeopardize your entire workout. The JWF Pulse Pro has a backlight, allowing you to check on your times no matter how dark!
Another great feature on a sports watch is that it is waterproof/ water resistant. This allows you to use the watch when outside in the rain, or in sports that involve water such as rowing or swimming. The JWF Pulse Pro is waterproof, and is a favourite for swimmers who like to check up on their length times whilst in the pool.
Overall, sports watches can potentially have an array of fantastic features to allow it to be used in any sporting activity you like. This makes the JWF Pulse Pro a great choice!