Product Details: Lamp: Lumen Bulb Colour: Black Brightness: Range 50 Meters Lamp Life: 100,000 Hours (Theoretical Value) Gear Position: 3 Gears Zoom (Strong Light, Low Light, Flashing) Battery: 3 AAA Batteries (Battery Self-Provided) Switch Mode: Tail Push Button Switch Size: Head Diameter 3.1 Cm, Tail Diameter 2.6 Cm, Not Extended The Length Before Being Grown Is 10 Cm, And The Length After Being Stretched Is 11 Cm. Net Weight: 55g (Without Battery) Lighting Time: About 3 Hours In Strong Light, More Than 6 Hours In Low Light Note: The Flash Makes People Blind Instantly For 45 Seconds The Telescopic Head Manually Adjusts The Focus, Similar To The Camera Lens Lens By Changing The Focal Length To Form A Different Spot. Optical Lens. When X 1, It Is Optical Condensing, And The Effective Light Collection Is 99.6% Without Flooding. The Convergent Light Spot Can Clearly See The Clear Structure Of The Chip's Light-Emitting Surface. However, Digital Cameras Cannot Cope With Such Large Contrasts. X 2000 Is Optical Floodlight With Uniform Spot, Suitable For Projection. Without Any Spotlight.