Touz Mini Aluminum Portable UV Flashlight Violet Light 21 LED UV Torch Light Lamp Flashlight Brand new and high quality 21 LED UV black light flashlight Long service life up to 10,000 hours Aluminum body, light weight Great for checking notes, credit cards, fluorescent inks (invisible inks), cracked glassware, or even crime scene LED Qty : 21 ultra bright LEDs Rain Waterproof Power: 3x AAA battery (not included)