Optic mineral watch glass offers a cost-effective alternative to sapphire, providing decent scratch resistance and clarity for everyday use. Its durability and ease of manufacturing make it a popular choice for mid-range timepieces, balancing performance and affordability.
| Size | 150, 155, 157, 158, 160, 165, 168, 170, 173, 175, 178, 180, 185, 190, 191, 195, 198, 200, 205, 206, 207, 210, 212, 213, 214, 215, 218, 220, 225, 230, 235, 240, 245, 250, 255, 257, 260, 265, 268, 269, 270, 271, 272, 273, 274, 275, 276, 278, 280, 282, 283, 284, 285, 286, 287, 288, 289, 290, 291, 292, 293, 294, 295, 297, 298, 300, 301, 305, 306, 308, 309, 310, 313, 315, 316, 317, 318, 320, 322, 323, 324, 325, 330, 334, 335, 336, 340, 343, 344, 345, 348, 350, 355, 360, 363, 365, 370, 375, 377, 380, 385, 400, 405 |
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