Cougar Goggles- Powered by 2 high quality 1st Generation+ light intensifier tubes and using fast precision optics, the Night Cougar has one of the clearest and brightest images available in a 1st Generation goggle. Includes (1) 3 volt lithium battery with a 10-20 hour battery life. NVG7-2 Goggles- An exceptional choice for hands free usage. High resolution image intensifier, auto brightness, bright source shut off. Also have a built in IR for total darkness with indicator on light within the FOV and flip. Powered by (1) 1 volt AA size battery with a 10-20 hour battery life. Camera adaptable. Viper1 Goggles- This high resolution 1st Generation night vision unit comes with 1x magnification but has the option of being 4x or 8x. Designed primarily to be a goggle system for hands free application, this unit can also be used as a compact monocular or can be attached to a camera for night time photography. Powered by (1) 3 volt lithium battery with a 10-20 hour battery life. Camera adaptable.