Waterproof stickers can be attached to your pack, jacket, bicycle etc. An economical and durable option to increase visibility or signal location. Self-adhesive. Run-time over 100 hours. Up to 1/2 mile visibility. Reflective front can be used as a rescue mirror. Waterproof. Bright white LED cycles through 3 light modes: Fast-flashing (press once), slow-flashing (press twice), steady-on (press three times) and off (press again). Hang packaged.