Replace your Ikelite flash bulkhead with this compact, independently sealed device, for reliable fiber optic triggering of a compatible fiber optic underwater strobe. High frame rate burst shooting is supported when used with an Ikelite DS160, DS161, DS162, DS230 or DS232 Strobe and High Sensitivity Optical Converter # 4405. 

The transmitter is powered by two CR2032 lithium single-use or rechargeable batteries (not included). The Transmitter has a built-in power save mode which prolongs battery life. Expect at least a week of diving out with average use. It is always recommended to travel with a spare set of batteries.