Standard length 19cm (fit wrist circumference 16-18cm, including 2-3cm adjustable chain tail), fit the wrist curve, wear comfortable and not tight. Multi-colour available: Rose gold: warm rose gold, whitening, gentle and elegant, suitable for spring and summer fresh wear. Platinum: cold white gold, simple and advanced, suitable for workplace commuting or stacking and matching, low-key luxury. Yellow gold colour: classic gold texture, glossy and warm, suitable for holiday gifts or elders to wear, to convey the auspicious meaning. Materials and Craftsmanship Genuine gold quality Solid gold / 18K gold: optional solid gold 999 (pure gold) or 18K gold (75% gold content), the surface layer is polished + electroplating process, wear-resistant antioxidant, long-term wear is not easy to fade. Eco-friendly plating: nickel-free plating technology, sensitive muscle friendly, wear peace of mind. Matching Scene Daily commuting: Match with simple shirts and suits to enhance workplace sophistication. Dating party: stacked with wristwatches and fine chains, the sense of hierarchy is drawn out, and a sense of sophistication is revealed in a low-key manner.