Metal structure, waterproof and shockproof. It withstand temperatures of 50 degrees below zero. Ideal for camping, hiking, adventure, positioning, mapping, etc. Unique Design: It has a 0.43 cu in storage for fishing hook and line,and can store other small things. Survival essentials: The signal mirror and whistle are designed for survival using. The whistle is 100 dB. The signal mirror is 1.4 in in diameter. Multifunctional: It has signal mirror,whistle,fishing hook and line. It can locate and map orientation. Compact and Portable: It measured3.5*2.5*1.4 in, 5.2oz, it can faultlessly fit in your pocket.

Special Feature: Waterproof. Item Dimensions LxWxH: 3.15 x 1.77 x 4.33 inches. Material: Aluminum. Brand: AOFAR. Date First Available: April 2, 2020. Best Sellers Rank: #154,292 in Sports & Outdoors. Customer Reviews: 4.3 out of 5 stars 287 ratings 4.3 out of 5 stars. : B0851BNZ2T. Manufacturer: ?AOFAR. Material: ?Aluminum. Brand Name: ?AOFAR. Item Dimensions LxWxH: ?3.15 x 1.77 x 4.33 inches. Package Weight: ?0.19 Kilograms. Item Package Dimensions L x W x H: ?4.49 x 3.27 x 1.85 inches.