Kestrel 4400 Heat Stress Tracker

• Heat Stress Calculation: Calculates WBGT and TWL, with on-screen alarms for caution and danger zones.
• Environmental Sensing: Measures ambient temperature, relative humidity, barometric pressure, wind speed, altitude, density altitude, dew point, and wind chill.
• Globe Temperature: Includes a black globe thermometer for direct measurement.
• Naturally Aspirated Wet Bulb: Calculates wet bulb temperature without the need for water. 
• Dimensions: 6.5x2.3x1.1 inches
• Weight: 4.4 oz
• Data Storage: Up to 2300 data points
• Power: 2 AAA batteries
• Waterproof: Yes
• Display: Multi-function, multi-digit, backlit monochrome dot-matrix display
• Data Logging: Automatic and manual data logging.
• Customization: Customizable screens, WBGT warning zones, and data storage.
• Connectivity: Optional Bluetooth for data upload.
• User-Replaceable Impeller: Allows for easy maintenance.
• Real-time Clock: Includes a real-time clock. 

In great condition, minor signs of wear from previous use