Strong ABS shell for reliable durability in rugged environments, protecting the device under harsh outdoor use. Portable and compact: lightweight, pocket-sized design that is easy to carry and quick to access during hiking, climbing, camping, and other outdoor activities. Precise measurements for confident decisions: temperature -10 C to 60 C, altitude -700 m to 9000 m, and barometer 300 to 1100 mbar, providing accurate height, weather, and environmental data. All-in-one navigation and safety tool: integrated altimeter and barometer deliver essential information for tracking elevation, monitoring atmospheric pressure, and supporting safe outdoor planning. Use scenarios: - Hiking and mountaineering: monitor elevation gain and pressure trends to choose routes and anticipate weather changes. - Skiing or snow sports: track altitude and pressure shifts to stay on course and assess conditions. - Camping and backpacking: quick environmental readings to inform decisions and daily planning. Key attributes at a glance: function (altimeter, barometer, temperature), compact size, durable ABS material, wide measurement ranges, and standalone usability without additional equipment.