GPS & Beidou dual navigation system, double location, ensures more accurate navigation Made of top chip and good quality plastic, sturdy and durable, working temperature is -20 to 60, can withstand harsh weather conditions, suitable for many places to use Supports USB charging, easy to use, large capacity battery can offer standby and working endurance Equipped with a mini torch on the top, can offer illumination in emergency, also suitable for night outdoor activities SERVICE GUARANTEE: If you are not satisfied with the Barometer we received, you can contact us by email at any time, we will reply and solve your problem in time, and strive to provide better service. Specification: Material: ABS Color: Yellow&Black Waterproof: IP44 Size: approx. 100*66*20mm / 3.9*2.6*0.8inch Weight: approx. 126g Package List: 1 x Multi-function Barometer 1 x USB Cable 1 x Manual 1 x Clean Cloth 1 x Lanyard