Royal Sovereign 2-Pack Portable Ultraviolet Counterfeit Detection (RCD-UVP2) High Security: Ultraviolet Light is used to check UV sensitive strips and markings Compact and Portable: Counterfeit Detector fits in your pocket and in the palm of your hand Multi-Purpose Solution: This counterfeit detector can be used to verify currency, passports, credit cards, and ID's User-Friendly: Includes two counterfeit detector solutions Durable: UL Certified. Battery Operated. 30 Day Manufacturers Limited Warranty.