BFG® Stopwatch (Timer) Crown CN-BFG03 BFG® 410
BFG® 410 crown (Ermano), square green, outside diameter 12.00 mm, tube diameter 8.00 mm, crown height 9.00 mm, tap 1.60 mm
* H. & W. Perrin Company Limited is independent of and not affiliated with or sponsored by BFG®. BFG® warranty does not apply to parts supplied by H. & W. Perrin Company Limited. Using generic crystals may devalue your watch.