Although we aren't geneticists, we bust out the scalpel spudger to compare these fraternal twins.

Each controller is fitted with a 1.9 Wh lithium-ion battery, Bluetooth, accelerometer/gyroscope, and a haptic "HD Rumble" motor.

Battery replacements certainly aren't as easy as in the original Wii Remotes, but it can be done.

Nintendo claims that the Joy-Con controllers offer up to 20 hours of game time, but it'll take a whole 3.5 hours to charge 'em back up.

If that doesn't cut it, the Joy-Con charging grip adds a battery boost as well as a (more ergonomic) grip.