Bulova® Waterproof Crown CN-BUL07 Bulova® 40AY
yellow no logo, thin slightly domed, Bulova® 40AY, outside diameter 4.00 mm, tube diameter 2.00 mm, tap 0.90 mm, height 2.00 mm
* H. & W. Perrin Company Limited is independent of and not affiliated with or sponsored by Bulova®. Bulova® warranty does not apply to parts supplied by H. & W. Perrin Company Limited. Using generic crystals may devalue your watch.