Features: This altimeter is made of plastic body and metal hook. Detachable Design The altimeter adopts a detachable design, lightweight and portable, just press the button on the back of the barometer to take it off. Our altimeter also features a metal carabiner clip so you can clip it to your pants or backpack for portability. 2-in-1 Multi-function This 2-in-1 altimeter has the functions of altimeter and barometer at the same time. No need to install batteries, you can use it with confidence. Measurement Range Our altimeter is not affected by bad weather, suitable for outdoor sports. It can measure altitude (0-5000m), pressure (0-1040 hpa) and temperature (-30-65C). Our altimeter is specially designed for outdoor sports enthusiasts, suitable for hiking, climbing, camping and many other outdoor sports. You can gift it to your dad, friends or yourself on special days like Father's Day, Thanksgiving, Christmas. Material: ABS Altimeter measurement range: 0-5000 meters Air pressure range: 580-1040hPa Temperature measurement range: -30C-50C Storage temperature: -30C-65C Resolution: 20m Dial diameter: 60mm Product size: 85 * 68 * 28 mm/3.3 * 2.7 * 1.1 inches Package size: 14.5*11*3.5cm/5.7*4.3*1.4in Package weight: 180 grams Packing list: 1 * Altimeter The small thermometer and compass are decorative and not functional.