BRIGHTFUFU 3pcs Retroreflector Survival Mirror Outdoor Camping Essential Signal Transmission Tool Reflective

Signaling mirror: suitable for outdoor activities and emergency uses, camping, hunting, skiing,tool reflectors.
Outdoor retroreflector: when the weather is clear, the optical signal transmission distance can than 100 kilometers,survival mirror.
Small mirror: it is suitable for long-distance communication in the field and sending signals for survival,field reflector mirrors.
Signal mirror: there is a manual on back side which show you how to use this mirror,emergency mirror.
: with aiming function, signal transmission is accurate and fast,outdoor accessories.