No strings attached. The Oceanic VT3 is a next generation dive computer featuring superior design and technology combined with Oceanic?s trademark ease of use and customization. Whether you?re venturing into the unknown or gliding over a shallow reef, the VT3 achieves a remarkable balance between features and usability, allowing you to focus on what?s important ? the dive. With Oceanic?s wireless transmitter, the diver can also monitor gas pressure from up to three independent cylinders ? ideal for both technical diving applications and recreational diving with our new Buddy Pressure Check feature. The Oceanic VT3 can be switched during the dive between up to three different Nitrox mixes containing 21-100% oxygen.Air, Nitrox, Gauge and Free Dive Modes Wireless Air Integrated TechnologySwitch between up to 3 independent transmitters, tracking up to 3 Nitrox mixes or your buddy?s tank pressure Patented Air Time Remaining AlgorithmAudible Alarms with User AcknowledgmentSmartGlo? BacklightingIncludes OceanLog? PC Download and Settings Upload Software and USB cable Advanced User Settings and OptionsAdjustable safety stop time and depth Use With or Without Wireless TransmitterDiver-Replaceable Batteries