Feature: 1. Adopt high precision sensor chip, setting altimeter, compass, barometer, thermometer hygrometer, weather forecast, flashlight functions in one. 2. Rechargeable professional altimeter for outdoor climbing, hiking, hunting, camping and travel. 3. Ergonomic design, delicate button structure design with premium material, ensuring the reliability and water resistance. 4. Support height gain/loss calculation and 24-hour historical height data/curve recording. 5. Support historical high/low altitude, air pressure, temperature, and humidity record, with time/date display and alarm function. 6. IPX4 waterproof, built-in rechargeable lithium battery for long using time, perfect for outdoor use. Specification: Item Type: Altimeter Condition: 100% brand new Color: As shown Model: FR500 Material: Silicone Altimeter Measuring Range: -2296ft to 29500ft (-700m to 9000m) Resolution: 1m/3ft Height Measurement: Sea level height/climbing height Climbing Altitude Recording Function: Support Altitude Gain/Loss Calculation: Support Altitude History Record: Record every 30 minutes Unit: Switch between m/ft Barometer Measuring Range: 300hpa to 1100hpa (8.8 to 32.6inHg) Resolution: 0.1hpa Unit: Switch between Millibar and Inhg Thermometer Display Range: -20 ℃ to 60 ℃ (-4 ℉ to 140 ℉) Resolution: 1 ℃/1 ℉ Unit: Switch between ℃ and ℉ History Temperature Record: Support Hygrometer Display Range: 20%-95% Historical Record: Max/Min humidity Compass Display Mode: 360 °, 16-orientation display Resolution: 1 ° Weather Forecast Forecast Range: Next 12 to 24 hours Four Weather Conditions: Sunny-Sunny to Cloudy-Cloudy-Rainy Time and Date Display Mode: 24H or 12H display mode Flashlight Flashlight: LED flashlight Backlight: 5s high intensity LED backlight Waterproof Level: IPX4 Accessories L1-12B Lithium Battery: 1pcs Battery Capacity: 5V 230mAh Product Size: Approx. 100x66x20mm/3.9x2.6x0.8in. Package List: 1 x Multifunctional Altimeter 1 x User Manual1 x USB Cable1 x Lanyard