 Monday news on WTOP, 10 and 40 past the hour. Let's check in with Tracy Jonke. This is a Bloomberg Money Minute. Rings for centuries have been symbols of wealth, status, and commitment. The ring as a health tracker is a 21st century development. We've reached 2.5 million rings sold. Tom Hale is the CEO of Aura Health, and he tells Bloomberg the market for his company's smart rings is large, both currently and potentially.