Seahorse SE 630 case with metal locks; no foam watertight, airtight, and Crush Resistant Automatic Pressure Purge System: Seahorse's automatic Pressure Purge System guarantees a perfect seal by incorporating its own O-Ring under one of the latches. You will never forget to set the valve since it automatically activates when closing the case. Pressure is released as you open the latch. Dimensions and weights Exterior: 17.5 x 14.2 x 7.5" (45 x 36 x 19cm) Interior: 16.0 x 11.6 x 6.2” (41 x 29 x 16cm) Weight: 6.29 lbs. (2.86 kg) Empty