Specs:

• Caliber number: NH34 Seiko SII (TMI) Watch Movement
• Up to 41+ hours of power reserve
• Movement type: automatic
• Frequency/Vibrations per hour: 21600 bph
• Includes watch stem and dial washer (Set the washer’s edges pointing upwards – see second image in gallery or below illustration)
• Ligne / MM Size: 12″‘ / 26.00 mm
• Height: 5.32 mm
• Height with cannon pinion: 7.55 mm
• Outer Diameter: 27.40 mm
• Casing Diameter (with dial holding spacer): 29.36 mm
• Hand Hole Sizes (H/M/S): 150/89/21
• Regulated Movement +/- 8 sec
• Hack-second or stop-second feature allows you to set the time precisely
• 24 Jewels
• Function: 4 Hands including a 2nd hour hand for GMT function, automatic and manual winding, date function
• Winding Direction: Clockwise
• White Date calendar at 3:00
• Compatible with both crown at 3 & 4