17.00 mm outside diameter, low profile plastic crystal, 14.30 mm opening diameter of the inside ring, yellow ring, minute track(black) and radium dots (Mido® colour 21-R), original vintage Mido® crystal
* H. & W. Perrin Company Limited is independent of and not affiliated with or sponsored by Mido®. Mido® warranty does not apply to parts supplied by H. & W. Perrin Company Limited.