美国采购需求：10 智能手表、蓝牙智能手表、优雅智能手表、启动智能手表、大型智能手表、全智能手表

I'm looking for a specialized ring designed primarily for vibration feedback. The key feature should be its ability to emit different vibration frequencies, easily adjustable, ideally covering a range from low to high settings. It should also include a digital screen that displays frequencies in a format that's simple and clear, preferably with a 0 to 9 digit configuration for easy readability. Additionally, I'm interested in the overall aesthetics of the ring—something sleek and modern that can appeal to a wide audience. Equally important is ensuring that the device is user-friendly, with intuitive controls for frequency adjustments. I'd also appreciate details on the materials used, battery life, and any customization options. This project has potential for broader applications, so information on scalability would be valuable as well. Looking forward to your response!