New Blacklight Invisible Ink Marker 9LED UV Ultra Violet Flashlight Torch LED Brand new and high quality Great for checking notes, credit cards, fluorescent inks (invisible inks), cracked glassware, or even crime scene 9 LED 1 Mode UV blacklight flashlight Long service life up to 10,000 hours Size: 8.8cm x 2.5cm x 2.5cm - 3.45inch x 0.98inch x 0.98inch