I heard about these a few times in my quest for a Quartz diver in the 38mm and under realm. They are pretty rare having been out of production for almost ten years and even then were JDM only. I found one in good condition on eBay and snapped it up.
The size is perfect for my 6 inch wrist. It wears just about like a 36mm. It features a perpetual calendar date and an 8 year battery life. It is an ISO certified 200m diver watch. The movement is a high frequency HAQ movement rated for 20 sec per year. I have observed around 0.1 sec / day so doing pretty good on that front.
I was not a fan of the OEM oyster style bracelet so I bought a jubilee meant for the similarly sized SKX013 and I really dig the look.