The good: Utilizes innovative bone-conduction audio technology; sounds fine underwater; allows swimmers to break up the splashy monotony with tunes; comes with its own goggles but can be used with other brands.

The bad: Expensive; placement of controls on the back of the head makes it difficult to operate; excessively loud if not placed directly against cheekbones; can cause nausea; doesn't include wall charger.

The bottom line: The SwiMP3 could add some fun to your swim routine, if you can afford it--just beware of potential nausea-inducing inner ear imbalance.

Read full review of the Finis SwiMP3 (128MB) »