PowerFlare LED Safety Light Red LED Orange Case Shelf Life - 10 Years, Battery - 1 CR-123 Lithium, No Leakage Can be deployed around fuel spills or in brush Size - 4.25" (12CM) diameter x 1.25" (3.5cm) Tall Weight - Less than 7oz (200g) with Battery Visibility Range - Night visibility to 900 M (~3000 ft) on road or water, &gt;10 miles (16 km) from air, Day:Visible to 300M (~1000 ft).