Compatible with SCUBAPRO Galileo Sol, Galileo Luna, and M2 personal dive computers (sold separately), this low-profile Smart+ transmitter provides convenient air integration without the hassle of a dangling hose. It screws into a 7/16-inch threaded high pressure port on your first stage and relays tank pressure and true remaining bottom time (RBT) to the computer screen. Coded transmission technology prevents interference between different dive computers. Powered by a replaceable CR2450 lithium battery — good for three years or 150 to 200 dives. Backed by a manufacturer's limited 1-year warranty. Driven to constantly innovate and improve the diving experience, SCUBAPRO builds flawless equipment for the work, sport, and lifestyle of people whose passion is found below the surface.