The PS28 Day/Night Clip-On System from ATN gives your daytime scope night vision capabilities in a matter of seconds. This system mounts in front of a daytime scope to enable nighttime operation. No shift of impact or re-zeroing required to get you shooting faster and with as little fuss as possible. The PS28 uses the latest in image intensifier tube technology for outstanding resolution and performance. Designed with fast catadioptric front lens system, automatic brightness control, and a detachable infrared illuminator. Lightweight, rugged, waterproof, and resistant to severe conditions. Includes a quick release mount, remote control unit, IR450-B4, mil-spec hard case, warranty card, one lithium battery, lens tissue, and instructions. Battery life: 60 hours. Manufacturer 2 year warranty.