Check the listing for details. Nightfox Red 1x 940nm Digital Night Vision Goggles. Color: Black, Condition: Used. Listed at 96.00 USD. Nightfox Red, 1x Magnification, Bi-Ocular Digital Night Vision Goggles. The official 3D printed dovetail from the company NightFox is included with the sale. These have around ~20 hours of use. They can be useful for walking around in pitch black conditions while indoors with the use of the built-in 940nm infrared lights. They are also useful outside at viewing distances of up to 50-100 yards. There is a built-in microphone and micro sd card slot that allows for up to 32gb of storage for filming in dark conditions. No micro sd card is included in this sale. This device can be helmet mounted with a Wilcox G-24 Mount, or a replica helmet mount. The NightFox Red takes 1 rechargeable 18650 battery for power. No battery is included with this purchase.