Casio DW-6600

Owners widely praise the Casio DW-6600 for its functional module, featuring large digits, bidirectional scrolling, and on-the-fly 12/24 hour switching, with a unique target time feature and a beloved 5-second countdown indicated by arrows. It is also noted as the first G-Shock with a full electroluminescent backlight and has a history of documented use by SEALs, with some owners finding it difficult to see other G-Shock models as an improvement. Date numerals are larger than the DW-6900's, and some enthusiasts wish it were still in production, though others dislike custom backlight graphics for reducing legibility and find the 60-minute countdown timer limiting. The value on the pre-owned market is inflated due to its association with Chris Kyle and collector preference for "Made in Japan" versions, despite no functional differences. Overall, owners rate the Casio DW-6600 highly for its functional module and historical significance as a G-Shock favorite.