Electronic Digital Altimeter 8 in 1 Multifunction LCD Backlight Mini Altimeter Barometer Compass Thermometer Weather Forecast Clock Calendar for Outdoor Climbing Hiking Fishing Multifunctional digital altimeter is based on electronic bearing sensor and air pressure sensor technology. Designed for outdoor use, the detachable lanyard makes the altimeter a convenient handheld or neck-worn device for activities such as climbing, hiking, fishing, and camping. Features: 8-in-1 LCD multifunction digital altimeter with digital barometer, compass, thermometer, weather forecast, clock, and calendar. LCD display with backlight for easy reading in low-light conditions. The device can store up to 256 historical altitude and air pressure records. Powered by a 3V CR2032 button battery. Press and hold the 'SET' button for 5 seconds to enter power-saving dormancy mode. Compact size and lightweight design with included lanyard for portability. Made from high-quality ABS material for durability. Suitable for outdoor use including climbing, hiking, fishing, and camping. Note: Size and color may vary slightly due to manual measurement and lighting conditions. Specifications: Color: Black & Yellow Material: ABS Screen: LCD with Backlight Altimeter Range: -2296 to 29500 ft, 3 ft resolution Barometer Range: 350 to 1100 hPa, 1 hPa resolution Compass Accuracy: ±3 degrees, 1 degree resolution Thermometer Range: -5 to 50°C (23 to 122°F), ±2°C accuracy, 1°C resolution Temperature Unit: Selectable between °C and °F Weather Forecast: Predicts conditions for the next 12 to 24 hours (Sunny, Partly Sunny, Cloudy, Rain) Time Format: 12H or 24H selectable Time Display: Hours, minutes, seconds Calendar: Month, date, year Power Supply: 1 x 3V CR2032 button battery Item Size: 93 x 54 x 15mm / 3.66 x 2.13 x 0.59in Item Weight: 47g / 1.64oz Package Size: 13.8 x 6.5 x 3cm / 5.43 x 2.56 x 1.18in Package Weight: 80g / 2.81oz Package Contents: 1 x Altimeter 1 x Lanyard 1 x User Manual (English)