Overview Reviews Product Description Crystal for Seiko case numbers 5P39-5B40 5P39-5B49 Product Videos Custom Field Product Reviews Write a Review Write a Review × Seiko Crystal for Seiko 5P39-5B40 5P39-5B49 ESJN40JN01 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *