19.50 mm x 3.05 mm (height) sapphire AG1S crystal, genuine 062SA3017 Omega® crystal, fits Omega® case REF 5661503, 5961503, 5961505, 5961507, 5961513, 5961515, 5961523, 5961640, 5961641, 6961508, 7961503
* H. & W. Perrin Company Limited is independent of and not affiliated with or sponsored by Omega®. Omega® warranty does not apply to parts supplied by H. & W. Perrin Company Limited.