Strong Magnetic Base: No wiring or assembly is required for installation. Strong magnetic base securely attached to any metal , even on moving or vibrating equipment. Solar-Powered Charging: Powered by solar energy, these solar flashing light charge automatically during the day and turn on automatically at night (the light only work at night and doesn't have switch) High Brightness: Featuring high-brightness LED beads and excellent light transmittance lampshade, in complete darkness, its visible range up to 500 meters(0.3 miles) IP54 Waterproof: With an IP54 classification, the solar flashes lights are to all types of bad weather, including fog, rainstorms, blizzards, and intense day heat Wide Application: This solar safety light can be installed on guardrails, construction sites, , mailboxes, driveways, vehicles or any place that requires a warning signal Colour:Yellow Material:Plastic Package Contents: 4 * Safety Light Outdoor Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.