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Kestrel 4500NV Pocket Weather Tracker with Night Vision at $309.00 with FREE shipping, is capable of monitoring and reporting an exhaustive list of environmental parameters from temperature to barometric pressure, dewpoint, wind chill, and more!
This unit has a night-vision preserving backlight which helps users to sustain natural night vision. The NV's backlight incorporates an optical filter to reduce overall brightness and minimize blue and green spectrum light to preserve night vision. Additionally, NV backlights are also much dimmer than a standard backlight, making it more difficult to detect with the naked eye in night operations. This backlight appears soft grayish pink, not red, and is still in the visible spectrum, so is not compatible with night-vision equipment.
It takes 30 to 45 minutes for the average eye to adapt to darkness and maximize night vision. Even a short burst of white, yellow, green or blue light “bleaches out” the rod cell photoreceptors in the eye and causes night blindness until the entire adaptation process can take place again. Light in the red spectrum does not cause this “bleaching out”, preventing night blindness and night vision fatigue.
Features:
- Digital compass
- Wind direction
- Crosswind and head/tailwind
- Waterproof and floats
- Time and date
- Easy-to-read, backlit display for low-light conditions
- Multi-function 3-line display
- Exterior temperature, humidity, and pressure sensors for fast and accurate readings
- Minimum, maximum, and average values
- Automatic and manual data storage
- Customizable data storage - 1400 data points
- Data charting
- Data upload (with optional interface)
- Five languages (English, French, Spanish, German, and Italian)
- Impeller is shock-mounted in a glass-reinforced plastic housing
- 5 year manufacturer warranty
- User Manual
Box Contents:
- Soft carry pouch
- Neck lanyard
- Five Year Warranty
- 2 AAA batteries with average life of 400 hours
- Kestrel Certificate of Conformity
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