This ring monitors heart rate, blood oxygen, HRV, stress, sleep quality, and daily activity. It offers up to 7 days of battery life, Wireless 5.3 connectivity, and IP68 waterproof protection. Made from titanium steel, it comes in multiple sizes for a secure fit. Price drops from $53.99 to just $22.99. Shipping adds $4.99.

Price applies to rose gold & black.