Total diameter of the case and the crown is approximately 37 to 38 millimeters. Since I've given the watch a shake back and forth it's been running for about three minutes but I cannot speak for how long this watch goes for. No idea if it gains or loses time.

Previously i sold a Seiko automatic with the barrel inside that charges the watch as you move around and the chap said that that part needs to be replaced and was after a further reduction.

So even though this watch works well I'm selling it as spares and repairs.