7-in-1 Multifunction Outdoor Survival Whistle (2 x CR2016)

Product link: http://www.dx.com/p/7-in-1-multifunction-outdoor-survival-whistle-2-x-cr2016-118906?Utm_rid=33902892&Utm_source=affiliate It´s great, in a little object that you can hang from your neck you have almost everything you could need to an outdoor survival: whistle if you get lost, led lantern to see at night (it´s really powerful), thermometer, compass, mirror to do light signals, magnifying glass (you can even light a fire with it if the sun is in the sky)...