---The Nightfox Advantage: Join over 75,000 Nightfox customers around the world trusting our helpful UK-based team to deliver them the best experience of digital infrared night vision. ---Designed for Close-Quarters Use (CQB): the Swift has a unique 1x magnification lens and a much wider viewing angle of 40°, making it easy to see your immediate surroundings (up to 75 yards away). ---Helmet mounted night vision: An adjustable head strap is included for head mounting. With a Nightfox Click Dovetail Adapter (sold separately), mount your Swift tactical goggles to helmet mounting systems like the Wilcox G24. ---Charge via USB: Enjoy over three hours of continuous night vision thanks to the integrated 3000mAh lithium battery, or bring a portable USB battery to power the Swift infrared goggles while using them.