If you enjoy the great outdoors, youll love the RA123 from Oregon Scientific! It measures altitudes to up to 9,000 metres and gives you information about atmospheric pressure. The RA123 was designed with mountaineering in mind because it doubles up as a digital compass and a torch light. It&rsquos resistant to water splashes and informs you of the weather so you can plan your outings and adventures in advance. The RA123 comes in the form of a carabiner, making it even more practical and stylish.