Seiko Chronograph 6138 0031 Mint Grade Auto SS Mens 1979 Japanese Watch Audemars Piguet a 5722A movement

a 5722A movement

Functions precisely

Needs to be wound every 30 hours

any darker shadows on case dial and crystal are reflections from my camera lens

Acrylic crystal

Seiko Chronograph 6138 0031 Mint Grade Auto SS Mens 1979 Japanese Watch Audemars Piguet a 5722A movement21 Jewels Vintage Automatic Watch Speed Timer Chronograph Reference 6138 0031 Men's watch Year: 1979 Movement calibre 6138 Automatic Guaranteed Original Vintage Seiko Watch in excellent condition Dark shadows are reflections from camera lens Stainless Steel Size 42mm measurement excluding crown 44mm top to bottom of case 15mm thickness Beautiful Original Black Dial with Silver Sub Dials New generic brand genuine leather band and generic buckle