Hattori Japan Quartz Chrono Watch Movement VK63 

caliber VK63 is part of the hybrid mechanical quartz (mechaquartz) movement line. It is a chronograph movement that uses quartz technology for the main functions of the watch and a mechanical module for operating the chronograph.

Functions:  Hours, minutes, small seconds, date, central chronograph seconds, 60 minute counter, 24 hour indicator

Specifications:

• Caliber: VK63
• Ligne Size: 13½
• Thickness (MM): 5.10mm
• Total Height 7.5mm 
• Hand Size: 150/90/32(32)
• Stem: 351177
• Cell/Battery/Power Source: 394
• Tap Size: 10