Overview Reviews Product Description Seiko Crystal for case #s 5Y39-5B30, 5Y39-5B31 Product Videos Custom Field Product Reviews Write a Review Write a Review × Seiko Crystal for Seiko 5Y39-5B30 BA0A05J20A Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *