ETA Watch Movement 251.471/474 3H 3EYE DT4 , Swiss Made 

• Caliber: 251.474-N3
• Linge Size: 10½
• Thickness (MM): 4.70mm
• Overall Height: 6.60mm
• Hand Size: 150/90/30(20)
• Stem: 401-1484
• Cell/Battery/Power Source: 394
• Tap Size: 10
• Includes: Protective Case, Stem, and Power source.
• Other Information:  Time-Zone Mechanism, Multi-function chronograph movement; 3 Eyes @ 2, 6, and 10 o' clock position.  1/10 second marker @ 2, small jumping seconds marker @ 6, and 30 minute marker @ 10 o' clock. Calendar window @ 4 with numbers Horizontal, EOL feature, 23 Jewels and Swiss made.