Halcyon Big Diver's Alert Marker, 4.5' (1.4 m) Long, Closed Circuit, Yellow LOC-SE The outer and inner surfaces

The outer and inner surfaces feature a black stretch polyester lining made from recycled plastic bottles

helping you track marine life and navigate reefs with greater awareness

while the 10" (25 cm) overall length delivers reliable reach for diving tasks

*CRI is a measure of a light source’s ability to show object colors “realistically” or “naturally” compared to daylight

Whether you’re a recreational diver or a technical diver

Halcyon Big Diver's Alert Marker, 4.5' (1.4 m) Long, Closed Circuit, Yellow LOC-SE The outer and inner surfacesThis 140 cm high visibility diver's alert marker delivers a reliable surface marker buoy for technical and recreational dives, designed for clear identification at the surface. Constructed from abrasion resistant coated fabric with an inflatable bladder, it uses an oral inflation valve and a dump valve for controlled deflation. High visibility yellow with reflective accents improves daytime and low light detection, and reinforced attachment points