The Fitbit Sense Advanced Smartwatch in Carbon/Graphite with a stainless steel ring and a carbon band is a remarkable wearable designed to enhance your health monitoring experience. Here are some key features:

1. Health Monitoring Tools:

   • EDA Scan App: Detects electrodermal activity, which may indicate your body’s response to stress.
   • Skin Temperature Sensor: Logs your skin temperature each night, allowing you to track variations.
   • Heart Health Assessment: Assess your heart for atrial fibrillation (a heart rhythm irregularity) and share results with your doctor (available in select countries).
   • Blood Oxygen Levels: View your nightly blood oxygen levels at a glance.

2. Specifications:

   • Screen Size: 1.58 inches.
   • Band Sizes:
     • Small: Fits wrist circumference of 140mm - 180mm.
     • Large: Fits wrist circumference of 180mm - 220mm.
   • Operating Temperature: 14°F to 113°F.
   • Maximum Operating Altitude: 28,000 feet.

3. Additional Details:

   • Alexa Built-in: Set workout timers, check the weather, and control smart home devices.
   • Unisex Design: Suitable for adults of all genders.
   • Compatibility: Works with smartphones.