The whole dive, on a watch you'll actually wear. The Tern TX is the most compact computer Shearwater makes — a 50 mm, 100-gram watch that disappears on your wrist topside and lights up like a full dive computer the moment you hit the water. The 1.3″ AMOLED screen is genuinely brilliant: deep blacks, punchy colour, and readable in bright sun or black water without squinting. Don't let the size fool you. This is a real Shearwater underneath — the same trusted Bühlmann ZHL-16C algorithm, Air, Nitrox, and 3-Gas Nitrox, plus Gauge and Freedive modes. One computer for your recreational, deco, and freediving days. What the “TX” adds Wireless air integration with up to four Swift transmitters — tank pressure, gas time remaining, and NDL all on one wrist — plus a tilt-compensated digital compass. No console, no guessing, no second gauge to read. It charges wirelessly on the included dock (up to 20 hours per charge, factory-replaceable battery), comes in 15 colours, and swaps straps in seconds with Shearwater's Remora™ quick-connect bands. Designed and built in Canada, depth-rated to 120 m. “The Tern TX is the one I recommend to divers who want air integration but hate wearing a hockey puck. It's the computer you'll still have on at dinner.”— Morad, PADI Master Instructor & Tec 50, OTA Scuba & Swim Want help picking a colour or pairing it with a Swift transmitter? Call or text our instructors at 855-OTA-DIVE (855-682-3483) — we dive what we sell.