The battery is charged by the rotor spinning, but there’s no mainspring nor escapement. Prior to the change to a Li-Ion battery, Seiko used to use a capacitor.
No a complete answer yet, but we are working towards the definition. I'll add more tomorrow if we aren't finished. For sure it's not a simple quartz movement; it's got "Tokyo" stripes decorating the plates and 38 jewels ... ...
It is bombproof and has the feeling of a higher price watch. I only had to change the rechargeable battery for a new capacitor and it has been running for more than 25 years without a service. But I have never taken the time to investigate more about this...
(That length of time depends on the particular iteration of the piece one happens to be discussing.) But for me, this is probably the watch's most endearing quality: pick it up after a long rest and the hands go through a slow-motion ballet to arrive at t...
Spent entirely too much time at this, but learned a lot (your intent, no doubt). SO here's my best shot: SBCG003 quartz; Automatic (rotor) regenerating system; LiOn batt w/overcharge prevention; low energy warning; train wheel setting; instant date set; 1...
Fred has crammed an awful lot into a single sentence (or string of word-fragments). And he is right, I was trying to get a few people to help spread a little extra Seiko input beyond snap-shots on the forum there. To make this chronograph work, here's wha...