Brand: SEIKO BUSINESS-A DIASHOCK SBA35 (30/04/23 2130)
Vibrations per hour: 18,000
Crystal: Acrylic (Some fine hair scratches)
Case back: Stainless steel & it's a one piece case (Fine scratches)
Case lug width: 19mm
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: Yes, DO NOT QUICK SET THE DAY OR DATE WITHIN 10 TO 4 O'CLOCK
Pull out the crown to the first click to set date or pull out the crown to secound to set time & turn it by 24 hour's to set day
(Set the time to 5.30 or 6.30 than quick set will be better)