Ultra Bright LED Bike Light/Flashlight Combo with 1000x Zoom and has a range of up to 500 feet, making it one of the most powerful and versatile Bicycle Lights available. It's removable (please see above) so it can be used as a tactical or recreational flashlight. There are three brightness settings - full strength, 50% power save mode, and emergency flash safety mode - so it's perfect for any circumstance or activity. It's made with reliability in mind, as it's constructed with the highest quality materials and is battery powered with three AAA batteries. The light is water-resistant and perfect for any weather. The Emergency Flash settings make it an essential piece of safety equipment. The bulb is powered with 250 Lumens, making sure you see where you're going and others see you!