The 316 Battery-Operated Flashing Hazard Lights are 6(TM) x 4(TM), are available in amber or red and feature a magnetic mount that attaches securely to back of vehicle or trailer, 18-bright, highly visible diodes, a 3-way switch for flashing or steady-on operation, 180 flashes per minute in flash mode, can flash for 36 hours or more on one set of alkaline batteries, can be optionally configured as self-standing easel and a sealed lens and base. Require four AA batteries (not included).