Here is the Triple Sensor Version 3, an original with advanced technology from Casio, allowing you to incorporate sensors that are 95% smaller than those of previous models, in a completely new compact Pro Trek style. Despite their small size, the new sensors in these models offer higher reading accuracy and greater energy efficiency. These three-sensor models provide more accurate altitude, air pressure, and bearing values than earlier models, while a barometric trend alarm alerts the wearer to sudden changes in pressure values. Design features include a case designed for outdoor use. With large side buttons and one-button access to the digital compass as well as the measurements for air pressure, altitude, and temperature, you have essential information at your fingertips. Additional features include solar charging, water resistance up to 100 meters deep, and more. All of these models are designed and constructed as essential items for outdoor activities.