9/10 – Reliable and flexible.

There is no PC/Mac desktop software. If you hate syncing to your phone, you’ll be frustrated. Also, the app occasionally forgets to sync the first dive of the day unless you manually refresh.

Pairing the Open 4.2 with the “Zodiac Dive” smartphone app (iOS and Android) took exactly 12 seconds. It uses standard Bluetooth LE. The app syncs dives automatically after surfacing.

Detailed technical data from Boat Specialists and Defender include: Specification 13' 9" (4.20 m) Beam (Width) 6' 3" (1.90 m) Hull Weight 595 lbs (270 kg) Max Horsepower Fuel Capacity 12 gallons (46 L) Tube Material Choice of PVC (Strongan) or Neoprene (Hypalon) Expert Reviews & Comparisons What to Expect: Zodiac Cruising | Lindblad Expeditions

The moment you unbox the Zodiac Open 4.2, one thing is clear: . The computer is housed in a chunky, fiber-reinforced polymer case with a scratch-resistant, domed mineral glass (or optional sapphire) display. It feels substantial in the hand—weighing in at 165 grams—without being annoying on the wrist.

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