There are 3 generations of Swivl Robot. In chronological order of release, they are: Gen1, Gen2 and C Series.
To determine which Swivl generation you are using, you can use the images and distinguishing characteristics listed below.
C Series

- Round, gray and white base
- Marker has 4-way directional pad
- Connects with Swivl lightning cable
- Base has power and (+) buttons
Gen2

- Round, black and white base
- Marker has left and right arrow buttons
- Connects with Bluetooth and audio cable
- Base has power and ‘Refresh’ buttons
- Magnetic flap over the Marker dock
Gen1

- Black and green base
- Round Marker
- No connection cable