This professional quality loupe is amazing! The LED and UV light ( blue light) offer the perfect immumination. Loupe has a bar to which a chain may be attached. Silver and Black Metal, comes in leather case. Triplet, Color corrected, Achromatic Lens UV wave length- 395mn, 6 White led bulb built in band for perfect illumination Plastic Body With Metal Folding Case Includes Key To Open/Close Battery Compartment Requires 3 AG7 Batteries (Batteries Are Included)