Yes, most Diesel first-copy watches are fully functional and look almost identical to the original Diesel models. These Diesel watches' first-copy variants usually replicate the design, dial layout, and even chronograph functionality. However, they often use lower-grade materials and less durable mechanisms compared to the authentic ones. Conclusion: If you want a stylish timepiece that captures the Diesel look without paying premium prices, a Diesel first-copy watch is a reasonable short-term option. But for long-term durability, performance, and brand reliability, investing in an original Diesel watch is always the smarter choice.