Ultra-Thin Smart Band – IPX8 Waterproof Health Tracker (B8)

At just 2.8mm, this is about as sleek as a health tracker gets — a curved metal band that quietly watches your heart, stress, and sleep.

• 2.8mm ultra-slim design – curved metal casing, barely-there feel.
• Health monitoring – heart rate, blood oxygen, stress, and HRV tracking.
• Sleep analysis – understand and improve your nights.
• IPX8 waterproof – swim-ready protection.

Works with Android and iOS.