7-in-1 Multifunctional Whistle Combines a high-decibel survival whistle with six additional essential outdoor tools for comprehensive emergency preparedness. Integrated Navigation Tools Features a highly accurate compass and reflective signal mirror to aid in navigation and rescue situations. Temperature Monitoring Includes a precise thermometer for quick and accurate temperature readings in various environments. Emergency Lighting Equipped with a high-brightness LED flashlight, providing reliable illumination with a 10,000-hour bulb lifespan. Survival Accessories Incorporates a magnifying glass for fire starting and a waterproof storage compartment for keeping essential items dry and secure. Specifications: Dimensions: 109 x 45 x 26 mm Battery Type: CR1220 (2 pieces) Functions: Whistle, Compass, Magnifying Glass, Reflective Mirror, Thermometer, LED Light, Waterproof Storage Material: Durable plastic Package included: 1 x Seven-in-One Whistle 2 x CR1220 Button Cell Batteries