Got a free line from T-mobile promotion. Can I use the SIM in a watch?

[teslapod]

I got free line from T-mobile during their last promotion. Can I use the SIM they sent me in an Apple Watch? Does the watch require a special plan and/or SIM?

 

[ZebraDude]

I got free line from T-mobile during their last promotion. Can I use the SIM they sent me in an Apple Watch? Does the watch require a special plan and/or SIM?

The Apple Watch uses a E-SIM. It is not user changeable.