Available in numerous color and mounting options, and in a six pack or as a single unit. The pricing on this page is for the single unit with heavy duty magnetic base. Powered by (2) D-cell alkaline batteries (not included). Battery Life: 600 hours flashing, 200 hours steady-on. Flash Rate: 60 triple flashes per minute. Utilizing the latest technology, optical design and flashing patterns. Uses ultra-bright, long-life, light emitting diodes (LEDs) rated at 100,000 hours.