I have a used sea quest balance BC and a scuba pro D350 regulator that have both been regularly serviced. I dove with it a couple months ago so it is in working order, but due for its annual servicing. This would be great gear for someone starting out or if they are unsure if they will go much and don’t want to shell out a ton of money. Only selling because I have new gear. Call or text Adam 843-991-4587.