These water activated and submersible deep drop strobe lights emit a pulsating strobe that baitfish gamefish and squid cannot resist. Upon contact with water a self contained lithium battery provides over 300 hours of powerful strobe light at depths up to 3 500 feet. Attract attention by attaching these lights on squid jigs Sabiki bait rigs deep water rigs swordfish rigs and even on life jackets for safety purposes. This item will be shipped in compliance with all USPS regulations or will be shipped ORM-D (which requires the package be marked as such) with domestic shipping only.