can you just send watch in for cash or do you need to trade

Lcwz wrote:

I just bought a new Apple Watch from Amazon can I still send my old watch in for a rebate

You can send your "old" Apple Watch anytime using the steps provided in Apple Trade In. If the device has any value, and passes inspection, you will be issued an Apple Gift Card which although not a "Rebate," can be used for "Products, accessories, apps, games, music, movies, TV shows, iCloud+, and more."