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Sea & Sea A1, A9 II, A7S III, A7R IV, A7 IV, Underwater Housing

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Sea & Sea A1, A9 II, A7S III, A7R IV, A7 IV, Underwater Housing

Universal Housing for Sony Apha Series


The Sea & Sea MDX-αU Universal Housing for Sony Alpha Series mirrorless cameras is a versatile housing compatible with the Sony A1, A9 II, A7S III, A7R IV, & A7 IV. It comes in two different color options (black and silver) and, as with all Sea & Sea housings, has excellent build quality.

To ensure its compatibility with a range of cameras in Sony's Alpha Series lineup, Sea & Sea has increased the size of the back panel in comparison to its other models. The large LCD screen viewing panel has always been a popular feature of Sea & Sea housings, and now it's even larger, giving photographers a better view of their camera's LCD screen and a better view inside the housing.

The redesigned fiber optic cable cover means cables are secure with less risk of falling out. The housing works with Sea & Sea TTL flash triggers (optional) to provide fast, accurate strobe lighting.

Another difference between this new universal housing and other models is that the leak alarm unit now comes as standard instead of as an optional extra.

All controls are marked with glow-in-the-dark markers for easy use in low-light conditions.


  • Compatible with Sony A1, A9 II, A7S III, A7R IV, & A7 IV
  • Made from corrosion-resistant aluminum alloy
  • Depth rating: 330ft (100m)
  • Size: 12.9 x 6.6 x 5.4 in. (330 x 169 x 137 mm)
  • Weight: 102.3oz (2,900g)
  • Tripod screw mount
  • Lens-lock release button
  • Glow-in-the-dark controls
Weight: 6.40 LBS
Brand: Sea & Sea

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