FOYTOKI Signal Mirror Small Mirror Field Outdoor Reflective Mirror Multi-Function Mirror Sourkout Light Grey

Field: with aiming function, signal transmission is accurate and fast,multi-function mirror.
Outdoor: when the weather is clear, the optical signal transmission distance can than 100 kilometers,emergency mirror.
Multi-function signal mirror: it is suitable for long-distance communication in the field and sending signals for survival,accessory reflector mirror.
Sourkout: suitable for outdoor activities and emergency uses, camping, hunting, skiing,small signal mirror.
Retroreflector: there is a manual on back side which show you how to use this mirror,survival mirror.