Specifications: 19pcs LED lights, high intensity, high visibility. Long lifespan, four lighting mode, wide range of uses. 4 modes: 1 LED is on, 7 LEDs are on, 19 LEDs are all on, flashing. Switch method: black button on the side of the battery compartment Item Name: Ultraviolet Head Light Material: Plastic LED Quantity: 19 Battery: 3 x AAA Batteries(Not Included) Features: Multifunction, High Brightness, 4 Modes Head Light Diameter: 4cm/1.57" (Approx.) Notes: You will find more amazing products if you visit our store. We guarantee the lowest price and the highest quality for all of our products! Due to differences in lighting and screen settings, the color of the project may be slightly different from the picture. Due to different manual measurements,allow for slight size differences. Package Includes: 1 x Ultraviolet Head Light