When evaluating time watches, focus on the movement type, which is the heart of the product. Japanese (Miyota/Seiko) or Swiss movements are preferred for reliability, while Chinese movements offer cost-efficiency for promotional tiers. Ensure the water resistance rating (e.g., 3ATM for daily use, 5ATM+ for sports) matches your target market's needs. Additionally, verify the case material (316L Stainless Steel is the industry standard for quality) and lens material (Sapphire crystal for high-end scratch resistance vs. Mineral glass for mid-range).