Dual Navigation System: Experience Unmatched Accuracy With The Integration Of GPS And Beidou, Ensuring Dependable Positioning In Various Outdoor Settings. Multi-Function: Transform Your Outdoor Adventures With Our Comprehensive Instrument That Displays Altitude, Climbing Speed, Atmospheric Pressure, Time, And More. IPX4 Waterproof: Fearlessly Tackle The Elements. Our Device Is Built To Resist Water Splashes From All Directions, Making It Ideal For Rainy Conditions Or Near Water Bodies. Robust Design: Constructed With High-Quality Materials, This Altimeter Can Withstand Falls, Pressure, Cold, And Heat, Offering Durability In Harsh Environments. Green and Environmentally Friendly: Embrace Sustainability. Our Product Features A Pure Mechanical Structure, Ensuring It's Eco-Friendly And Free From Batteries Or Chargers. Embark on your next adventure with confidence, knowing our high-precision altimeter has got you covered. Designed for durability and functionality, it seamlessly combines the best of technology with the needs of outdoor enthusiasts. Whether you're scaling mountains or exploring new trails, this tool is your reliable companion, offering accurate measurements and a rugged build to withstand the toughest challenges. Dive into your outdoor activities with peace of mind and let us take care of the rest. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.