Garmin Forerunner 35 - Speed without sensor?

I'm looking for a very small, lightweight GPS that can display SPEED (MPH), using GPS and not requiring an external connected sensor. I need it to be small. Like one of the bike computers but they seem to all require a cadence or speed sensor. The other wearables I'm not sure about.

Can the Garmin Forerunner 35 display SPEED (Velocity) in MPH, without an external sensor (i.e. calculation based on GPS, not Bluetooth or cell required)?

I can't find anything that directly answers this question directly. I do see that they have a speed data field but not if it's GPS calculated. did see one video on a similar Garmin that has pairing with sensors so I don't know if those are required for this or any models.

Related: Does the Edge 25 require a sensor to display speed, without a sensor? Since it has GPS, it should be possible. But they sell a speed sensor for it, so I wonder why, if it has GPS.