GEESTONE 5pcs Emergency Survival Signal Mirror, Outdoor Multifunctional Military Grade Survival Emergency Reflective Signal Star Flash Mirror Tool with Lanyard Whistle for Adventure, Rescue, Floating

【ACCURATE & DURABLE】 With the aim function, the signal transmission is accurate and fast. Virtually unbreakable mirror works in overcast conditions and floats if dropped in the water.. 【LANYARD & WHISTLE】 Includes a lanyard for a secure grip while in use or to make sure a solid grip on a backpack or other outdoor gear. There is a whistle on the lanyard, can be used when you need to be rescued.. 【EASY TO USE】 This product has an aim indicator, which can help aim for the target for help by reflecting light and it is very useful in practical use.. 【EMERGENCY TOOL】 Suitable for long-distance communication in the field and send reflective survival signal.. 【SUIT FOR ANY WEATHER】On clear day, optical signals can travel more than 100 kilometers.It can be used on cloudy day or at night.