Oregon Scientific introduced a twist on the standard heart rate monitor at the Consumer Electronics Show. In addition to the standard beats per minute and calories burned, the T1 Zone Trainer with Hydration Index tells you when it’s time for a drink. The old advice, “If you’re thirsty, you’re already dehydrated,” was never helpful. With the T1, you’ll get a warning before your tongue dries out. The monitor has three exercise modes: jogging, running, and cycling. In addition to heart rate and hydration it measures calories and percent fat burned. We like the tap screen feature to control the T1, rather than fiddling with several buttons to start the chronometer or scroll through modes and readings.
(www2.oregonscientific.com, T1 Zone Trainer with Hydration Index, $119.99)