7-in-1 Multifunction Outdoor Survival Whistle (2 x CR2016)
Color: Army Green - Made of durable plastic material - 7-in-1 function: Thermometer (-20~50'C) white LED light reflector compass whistle magnifier gas-tight silo - Comes with nylon strap (100cm) - Great for outdoor activities such as hiking camping etc. - Powered by 2 x CR2016 batteries (included)