Fitbit Sense Advanced Smartwatch plus ECG app In Carbon / Graphite

Fitbit Sense Advanced Smartwatch with Tools for Heart Health, Stress Management & Skin Temperature Trends, Carbon / Graphite, One Size. In excellent used condition. Includes: * Original band (size 7.1 - 8.7 inches); however, it is gently worn. * Charger Dock / Stand Base Station with 4.2ft USB Cable. Compatible with: Fitbit Sense; Sense 2; Versa 3; Versa 4. * Additional bands (size 5.5 - 7.1 in.) made of soft silicone in slim design. In slate blue, dark green, black and purple. Gentle to the skin. Green and blue are brand new. Black and purple are gently worn. * Original box and manual. FEATURES: * EDA Scan app that detects electrodermal activity. * An on-wrist skin temperature sensor tracks activity so you can see how it varies. You can also see your nightly blood oxygen levels. * High & low heart rate notifications alert if yours seems above or below your average. * Battery charging gives you a full day’s charge * Built-in GPS during runs, hikes, rides and more to see pace & distance. * Built-in mic and speaker to take Bluetooth calls hands-free when your phone is nearby. * Built-in Google Assistant or Amazon Alexa to get quick news, set bedtime reminders and alarms, control your smart home devices and more just by speaking to your watch. * weather app, mindfulness app, wallet, calendar etc. * Fitbit premium available for first time users