Kestrel 4000 Weather & Environmental Meter with Data Logging Rugged, handheld, portable weather station with onboard data logging and graphing; senses wind speed, temperature, humidity and pressure and displays up to 16 total measurements on large, clear LCD Options include case color, Bluetooth wireless data transfer and standard or red night vision preserving backlight Waterproof (IP-67), floats, drop-tested to military standards (MIL-STD-810G), patented Includes soft pouch, neck lanyard, 2 Energizer Ultimate Lithium AAA batteries and 5-year warranty Used in firefighting, hazardous materials response, meteorology, military, law enforcement, research, education, scientific expeditions and more