Nauticam NA-RX100V, for Sony RX100V, in very good condition, with vacuum system and pump, hold its vacuum, so all o rings are OK. Anyone familiar with underwater photography will know that this make is up there with the best, full control of all camera functions, very small and light considering it is an alloy case. one of the photos shows the green light indicating that vacuum is being held. small scuff mark on the rear LCD screen, but doesn't in any way effect the working of the housing