ABS plastic Material 8-in-1 multifunction mini digital altimeter with 1.8 inch LCD screen. * The Handheld Weather Station includes a digital clock, thermometer, altimeter, compass, and barometer (relative and absolute with sea-level correction), and a weather forecaster. * The Handheld Weather Station is big on features and functions, yet small on price and size. * 5 seconds super bright LED backlight for the mini digital altimeter. * Power supply: CR2032 button battery. Size: 63 x 53 x 15 mm, Color: Blue.