Personal-sized IR LED strobe. Use it as an anti-fratricide (IFF) marker for SWAT, anti-terrorism, and incident response teams, an IR marker strobe for K-9 units and SAR operations, evidence and route marker, and for airlift ground support teams. Visibility +/-1 mile (conditions permitting and depending on NVE generation). Will operate for 200+ hours on 2 AA alkaline batteries. Operates at a flash rate of 3.2 Hz.(3+ flashes/sec, 190/min.), this is 4 times the rate of commonly used (Phoenix Jr.) IR markers, so it's easy to differentiate. COMPARE to Phoenix Jr.- Vista Flash™ runs 4 times longer, flashes 4x faster, has 1/4 the operating cost, and costs about the same.