The S620 Ti 2nd Stage looks very similar to the S600 until you hold them side by side and look inside. The S620 has taken the best bits from the rest of the range to make a top notch regulator. Minor cosmetic changes to the front cover make the purge button larger. Overall is’t a little bit smaller than the S600 but the diaphragm remains the same size which has reduced the work of breathing by 37%. A new exhaust T deflects the bubbles away from your mask and face so you get an unobstructed view in the water. Inside the 2nd stage the barrel is made from Titanium which is lighter than brass valves and corrosion resistant. The S620 also features a new Compact Hi-Flow mouthpiece, exclusive to the S620 fitted to the Over-sized Bore which increases the airflow from the Super-Flow Hose. The S620Ti now sits above the S600 in terms of performance so if you’d like to take a look at Scubapro’s latest Regulator head over to our shop in Faversham or check out my quick video review below