The 574 Alert/Locate Plus is the same as the 544 kit, with the addition of a signal mirror, whistle and distress flag.
It also includes the new high performance aerial signals.
• 12-Gauge safety launcher
• (4) 12-Gauge high performance red aerial signals
• (4) handheld red signal flares
• (2) handheld orange smoke signal
• (1) signal mirror
• (1) SOLAS and USCG approved whistle
• (1) CG approved distress flag
• Storage case
• Note: This item can be shipped within the US by ground via common carrier (truck), but will incur a $35 (6/24/13) hazmat handling fee if shipped via UPS or FedEx; CANNOT be shipped by air, nor via USPS