1. Each piece of resin is slowly polished by experienced craftsmen. More durable and more comfortable than plastic. 2. Comes with durable metal connectors and buckles. Don't worry about falling off. 3. Moderate waterproof performance, suitable for washing hands, swimming or snorkeling, but not diving. 4. Lightweight resin design. Relax your wrists away from the heaviness. 5. Luxurious, noble, elegant and durable style suitable for work, leisure or travel.