CONDITION: NWT—NEW+NEVER used/opened What's included: •Fitbit Sense™ •Classic wristband (small & large) •Charging cable Size+Fit: • Wrist Band (in circumference) —SMALL: 5.5" - 7.1" —LARGE: 7.1" - 8.7" • Dimensions: 1.59in l x 1.59in w x 0.49in h Features— • High & Low Heart Rate Notifications • Built-in Voice Assistant • Calls from Your Wrist—Speaker+Microphone • Vibration motor • Wi-Fi • Built-in GPS+GLONASS • 6+ Day Battery Life •Smart Wake feature • Optimize your workout routine with a Daily Readiness Score to reveal if you're ready to exercise or should focus on recovery • 6-month Fitbit Premium Included • Personalized health & fitness guidance with a 6-month Fitbit Premium membership for new Premium users •EDA Scan App •Fitbit ECG App & Irregular Heart Rhythm Notifications •On-wrist Skin Temperature Sensor •Understand Your SpO2 Levels • Saves: 7 days of detailed motion data(min by min)+daily totals for past 30 days Meet Fitbit Sense, the advanced health smartwatch that helps you tune in to your body & guides you toward better health. Assess your heart for atrial fibrillation (AFib) with a compatible ECG app right on your wrist, track & manage stress, better understand your sleep quality & even keep an eye on patterns in your skin temperature. Plus, Fitbit is part of the Google family. The Fitbit Sense is a good fit if you want to measure your metrics and offers more support in improving your mental well-being.