DV Poseidon Cyklon 5000 comes with direct feed first stage cover and scubapro gauge, O2 cleaned. 

Cyklon 5000 is a real workhorse - a lightweight regulator which gives the diver plenty of air even when worked hard. Exhaust is to the side to keep your view clear. Cyklon 5000 can be served from both left and right and regardless of its position in the water. This was actually the first diving regulator in the world with one hose and the demand valve close to the mouth. Cost New £400