Powerful Triple Sensor technology goes everywhere you do. Digital Compass with Duplex LCD helps you find your position and plan your route, while the barometer/thermometer can help you predict what kind of weather lies ahead. Of course there's the altimeter which can track altitude, cumulative ascent and decent in route to your destination. Triple Sensor, Duplex LCD, Auto EL Backlight. Blue Pathfinder Triple Sensor Watch with a Nylon Band.