Shearwater Tern TX Dive Computer depth gauge The GSM Gdivers uses a

The GSM Gdivers uses a 9V alkaline battery and has a “low battery” alarm which beeps every 30 seconds when the battery is low

or whenever you have a question

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When you don't need the snorkel

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Shearwater Tern TX Dive Computer depth gauge The GSM Gdivers uses aThis Products Overview Shearwater's most compact dive computer redefines diving convenience and versatility for sport divers. Incorporating a compact design with advanced features, the Tern TX includes both optional wireless air integration with up to 4 tanks and a digital compass. Its enhanced visibility, user friendly interface, and compatibility with multiple diving modes, make it an essential tool for divers seeking reliability and ease of use.