Brand: SEIKO SPORTSMATIC CALENDAR WATER PROOF DIASHOCK
SS73 (05/07/20 1330)
Gender: Men's
Case no: D2xxxxx / J13057 SMAC
Function: Hour, min & sec hands with date
Caliber: SEIKOSHA 790
Vibrations per hour: 18,000
Driving system: Automatic winding
Dial: Nice silver color pattern dial original
Dial no: JAPAN MADE SMACJ13H285ED
Crystal: Acrylic (Some fine hair scratches)
Case: Stainless steel (Fine scratches & very small dent)
Case back: Stainless steel (Fine scratches)
Dimensions of case: 36.5 x 44.5 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 35 to 40 hour's depend on movement
Accuracy: Tested flat & it's within 60 sec. Please see the last pic
Quick set: No, Turn the crown by 24 hour's to set date
Remarks: This watch are used in Japan