The Nite Hunter NHV Rifle Mounted Light System has re-chargeable battery and charger (competitor product requires CR123s) and has LED-based technology. It will work in any weather conditions including cold weather (competitor product will not work below 40 degrees F), comes with 3 different mounting solutions so you can mount to a 30mm scope, 1 inch scope and Picatinny rail (competitor product only comes with 1 inch and customer must buy additional brackets) . The NHV Rifle Light System mounts are simple, strong and effective. The system mounts on most all rifles and includes ALL the popular mounting options in a single kit. This includes a 160 Lumens Green LED light, a clicker and pressure switch, a rechargeable battery and charger plus a 1 inch scope mount, a 30mm scope mount and a picatinny rail mount. The battery life is 7 plus hours with a full charge and will easily illuminate out to 200 plus yards, turning your rifle into a very inexpensive near-night vision set-up.