Just bought one from Skywatches, it's running 14 seconds fast in 24 hours at the mo. It's a K1, but I bought a SNZG15J1 and that is varying only about +2-5 seconds after 6 months or so. I have little doubt that a K1 watch is every bit as accurate as a J1.
PS, not my image, but one of the ones you may have lost.
