Fitbit Sense Advanced Health Smartwatch Fitness Activity Trackers FB512

Charges and works. Everything is in the box. 

• Model: FB512BKBK-FRCJK
• Colour: Gravite
  
• On-wrist stress tracing with EDA sensor
• High and low heart rate notifications
• Sleep tracking and sleep score
• Built-In GPS
• Alexa and Google Assistant is built-in
  

  
  

Included:

• Fitbit Sense
• Small and Large Bands
• Charger
• Manual