Silva Forecaster 610
Here's what other sites are saying:
The handy-size Forecaster compass and thermometer combination can be brought along on camping trips as a zipper pull, key chain or pendant.
An accurate easy-to-read compass/thermometer combo. It works as a key chain or zipper pull. Fixed with 5 compass graduations with wind chill table conveniently located on the back of compass.
- Ramsey Outdoor