Ocean Signal, which makes marine safety and communications products in the United Kingdom, introduced its SafeSea E100/E100G EPIRBs to the United States in February. The units operate in the 406 MHz band but are also fitted with a 121.5 MHz homing beacon and a bright LED strobe. The E100G houses a 50-channel GPS receiver for quick, accurate position acquisition. The units come with a choice of manual or float-free brackets. Ocean Signal says it engineered the EPIRBs to operate continuously for four days; batteries can be replaced by the user. Prices range from $519 to $929, brackets included. Call 978-277-1234 or visit www.oceansignal.com.