Star Wars Sphero R2D2 and R2Q5 Droids - Smart Robots Review - YouTube
How Sphero created the best R2-D2 toy ever released - Polygon
Star Wars Sphero R2-D2 vs. Anki Cozmo vs. Littlebits Droid | Time
Robot “R2-D2”
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R2-D2 - Wikipedia
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Sphero R2-D2 App-Controlled Droid Review: The Perfect Star Wars Toy | WIRED
Sphero's awesome R2-D2 robot does the one thing no other's done before | Mashable
R2-D2 | Wookieepedia | Fandom
Amazon.com: R2-D2 App-Enabled Droid (Discontinued by Manufacturer) : Toys & Games
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R2-D2, from Return of the Jedi | National Museum of American History