Pros:

• Cheap
• May still have regular capabilities
• not a big deal if it breaks
• They usually don’t require “service,” just Bluetooth and being connected to a phone.

Cons

• Usually they require an app, that could just be Spyware
• it will not last long
• the capabilities it will have will be a poor imitation of the original.
• Could be irritating (to the skin). It may not fit right.
• Poor battery life
• Additional E-waste when you do get rid of it once it dies.