Slidable and AdjustableSlidable rail offers your the best postion freely. Also makes the blue pistol beam light combo be compatible with 21±0.5mm width picatinny rail.High Bright FlashlightThe 700 Lumens tactical flashlight and green beam combo is rechargeable, can run about 12 hours for beam only, 75 minutes for flashlight only, 60 minutes for flashlight and beam.The green beam output is less than 5mW, class IIIa. The beam distance is about 200 meters/ day; 2000 meters/ night.Strobe and Momentary FunctionThree Tactical Modes Steady + Strobe & Momentary on Function. Steady mode Single-press; Strobe mode Double-press; Momentary on Single/Double press the button and hold it.Power Level IndicatorThe power Level Indicator To press the, the power level indicator has three colors to show the battery level Red=less than 30%, Yellow=30%-70%, Green=70%-100%. You will know the item power level promptly.