21LEDs 400nm Violet UV LED Flashlight Fluorescence Sterilization Banknote Detection Pen    Features: 1. UV flashlight is used to detect whether there everyday items containing fluorescent agent, particularly cleaning products, cosmetics, toilet paper, sanitary napkins or diapers, etc  2. The body of this flashlight is built of high quality aluminum alloy, and it has a very solid construction.  3. Excellent waterproof, suitable for outdoor environment, adverse weather conditions.  4. With hand strap, easy to carry.  5. Multi-function as UV rays flashlight,  Fluorescence detection pen,  Sterilization detection pen, Counterfeit detection pen, etc.  6. Application areas: - Medical devices.  - Disinfection sterilization.  - Ink curing.  - Metal crack, crack detection.  - Photocatalyst, light detection.  - Money detect detector device,  - Anti-fake detection ,  - Medical measurements and biometric security testing  - Hydraulic leak.  - According to Amber, arresting scorpions, and examination of tickets. Passport, credit card, identity card.  - animal urine test.   - Fluorescent powder, phosphor agent detection.  - Ore, jewelry, jade detection  - Great for checking notes, credit cards, fluorescent inks (invisible inks), cracked glassware, or even crime scene.  - Paper towels, facial mask, cosmetic, children's toys, books, clothes.......     Specifications: Total Emitters:21x LEDs,  Light color:Violet light,  Mode:UV,  Range:About 50 m,  Runtime:2-3 Hours,  Battery Configurations:3x AAA battery (Not included),  Voltage Input:4.5V,  Switch Type:Clicky,  Switch Location:Tail of the flashlight,  Material:Aluminum alloy,  Impact Resistant 1 m,  Waterproof:IPX4 life waterproof,  Carrying Strap:Lanyard,  Color:Silver,  Weight:115g,  Size:95mmx 35mm (Lengthx Diameter),     Package included: 1 x 400nm UV Flashlight Fluorescence Sterilization Counterfeit Pen,  1 x Battery tube,  1 x Lanyard,