27.20 mm outside diameter, low profile plastic crystal, 25.00 mm opening diameter of the inside ring, grey ring with radium dots (Mido® colour 40-R), no minute track, 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.