The most brilliant personal strobe made, the Firefly 4G uses a proprietary lithium battery, with an 8-hour minimum continuous operating life. Features a spark-proof switch and is waterproof to 200 feet. 10-year lithium battery included.
The original form of this battery has been discontinued. Our replacement solution is powered by two (2) CR123 lithium batteries that fit into your Firefly strobe. This is made possible through a custom designed and precision machined end cap that is included with your purchase.