Supplied in a case, as a set of 5. This sequential version of Pulsar Pro has the advantage of having a simplified sequential flash operating mode with a raised power button inside the case to active the sequence instantly for quick deployment. This provides a 'flow' effect of light as each Pod flashes in turn, designed for traffic control, signalling, hazard awareness, zone demarcations and vehicle safety. Ideal for professional applications, including the Police, Fire and Highway Services. Multiple cases of Pods can be 'daisy chained' together to produce long corridors of flashing light. The Rechargeable LED warning lights are small but robust units are manufactured in shock resistant plastic housing, are waterproof (up to 10 metres) and virtually indestructible (withstanding most vehicle weights if crushed). Built in magnets allow attachment to vehicles or any metal surfaces.