Oh my god, this controller is so small. It measures just under 3 inches by 1 inch. It's so cute! It's available in eight different candy colors, including two different transparent versions — purple and teal — that remind me of the Nintendo 64 controllers of my youth. The Atom is compatible with Nintendo Switch, PC, macOS, iOS and Android devices. The best part is that it actually works. I use it to play Stardew Valley and bastion on my iPhone. It is important to note that those little buttons work well, but they are very small. My thumbs sometimes pressed on the D-pad instead of the left one. I don't necessarily want to complete a Skull Cavern run with the Atom. But for simple or retro-style gaming, it's an excellent and very affordable handheld controller that looks expensive on a keychain to boot. It has 10 hours of battery life and charges via USB-C.