Brand: SEIKOMATIC DIASHOCK WATER 30 PROOF
SM158 (19/07/20 2130)
Gender: Men's
Case no: 20xxxxx / J13044E MA
Function: Hour, min & sec hands
Caliber: 603
Vibrations per hour: 18,000
Production year: Oct 1962's
Driving system: Automatic winding
Dial: Nice gray black color dial original (Fine scratches)
Dial no: JAPAN MADE
Crystal: Acrylic (Some fine hair scratches)
Case: Stainless steel (Fine scratches & small dent)
Case back: Stainless steel (Fine scratches)
Dimensions of case: 36 x 44 mm (Excluding crown)
Case lug width: 18mm
Condition: Used, working, very fine in as found condition as you can see at the Picture
Service: Yes
Power reserve: Fully wind or charged will last up to 33 to 38 hour's depend on movement
Accuracy: Tested flat & it's within 60 sec. Please see the last pic
Quick set: -
Remarks: This watch are used in Japan