Outstand Performance: A maximum output of 1,250 lumens and a 240-meter beam distance Professional Rail Mount Light: Removable M-LOK mount features an innovative slide rail and a mechanical lock for a fast and secure attachment/detachment. (Compatible with Picatinny rails with the optional Pic Rail Adapter) Innovative Remote Switch: The push-to-lock magnetic remote switch comes with a locking function for quick operation and a tight fit by a slight push of the ring Multifunctional Tail Switch: Magnetic charging, tactical handheld operation, and remote switch compatibility Output: 1250 lumensRuntime: 300 minutesBeam Distance: 240 meters Battery ORB-185C201 pack2040mAh 3.6V 18500 Size 115.5*29*25.7mm