Garmin launches Index Sleep Monitor, an upper-arm wearable for detailed sleep tracking with HRV, Pulse Ox, smart alarm, and 7-day battery life.

Garmin has introduced the Index Sleep Monitor, a comfortable, screenless armband designed to track detailed sleep statistics throughout the night.

Like the Oura Ring, the Samsung Galaxy Ring is an excellent discreet wearable, but one that doesn't require a subscription, ...