Can I trade in my Hummingbird Duos for Hummingbird Bits? Matt Hrydil March 04, 2019 03:12 Updated Follow Yes, if you bought your Hummingbird Duos within the last 30 days and they are in resalable condition. See our return policy for more information. Related articles What is the difference between the Hummingbird Bit and the Hummingbird Duo? Can I upgrade my Hummingbird Duos to function like Hummingbird Bits? Why do I need a Bluetooth USB dongle for the Hummingbird Bit? How do I get the Hummingbird Duo working with MakeCode? Do you have an educator discount? Comments 0 comments Please sign in to leave a comment.