Nagano-based Chinon [JP] has released a wristwatch that doubles as a portable health monitor. The so-called Heat Watcher is able to caution users who exercise or work under extreme circumstances against heatstrokes.

Users can pre-set the watch via 3 levels that determine the expected intensity of the work or exercise (light, medium and hard). One’s own physical stability can be selected from 2 different levels.

Next to warning users against possible heatstrokes, the Heat Watcher measures the body temperature and displays “Drink!” and “Have a rest!” messages when it detects this is what your body needs. It also features a hygrometer (measuring the level of humidity in the air) and a stopwatch.

The watch costs $91 and is Nippon-only at this point.