Unique status changing window alerts you if your lock has been opened with a TSA secured tool, or by an unauthorized person using a counterfeit device. * Product Material: Metal * Product Weight: 0.16 lbs. * Status window changes from green to red if lock has been opened * 3-Dial Combination Lock * Resettable Combination * Specialized mechanism enforces re-locking after inspection - TSA tool cannot be removed from lock body until lock is re-secured * Each lock features the Travel Sentry™ mark, which alerts TSA personnel that they may open this lock without destroying it * Each TSA screening location has a secured set of codes and tools to open Travel Sentry™ * Travel Sentry Certified * Accepted and recognized by the TSA