Mark out your carpark or worksite with these smart road studs. They have 800 metre visibility and one 8 hour charge provides over 100 hours of continuous light! Made with a tough alloy body, 4 super bright LEDs. Yellow LED also available in White, Red or Blue. Waterproof rating of IP68 and can withstand a weight of25 tons. Size is 100mm x 100mm x 20mm. Flashing or static options.