Whether you bought a new fitness tracker to get in shape or a smartwatch to get notifications on your wrist, the old ones are likely to end up in a drawer or closet. It’s useless to stay there for too long, and the longer you leave it, the less valuable it becomes. Why not clean up your old smartwatch and sell or give it away before it fades from your memory? Here’s how to get your old fitness tracker ready to sell, give away, donate, or recycle for as much money as possible. In this quick guide, we will show…