ACR Hot Shot Signal Mirror w/ WhistleDesigned for finding overboard members in rough conditions. Provides optimum sighting spot with a USCG approved whistle. The lanyard is perfect for securing to a person or liferaft.Features: Designed to provide optimum sighting "spot" with holographic red dot viewing window; When target image, mirror and sun are in proper alignment, red dot on target ensures mirror reflection is on target; Telescope quality second surface reflective mirror is bright, provides focused image; Buoyant float for easy recovery if dropped overboard; Patented whistle (meets USCG) for audible alerting in low visibility conditions; Lanyard for securing to person or liferaft; Simple, total safety signaling package; Specifications: Size: 4.25 x 2.75 x .19 in. (10.8 x 7.0 W x .5 cm); Weight: 1.8 oz (51 g); Material: Mirror surface; Color: Reflective; Limited Warranty: 1 Year through ACR;