Introducing the Oceanic+ Submersible Pressure Gauge - your trusty sidekick that's all about making your dives safer and more informed. It's a reliable and precise gauge that keeps you updated on how much air you've got left in your tank. So, whether you're mingling with the fish or delving into the mystic depths, you'll always know your air status. This gauge boasts sharp white and red digits against a sleek black background, making sure you don't have to squint to read it, even in the most whimsical of lighting. The Oceanic+ Submersible Pressure Gauge is compatible with Nitrox up to 40%.