The controller is clearly inspired by the Nintendo Switch Joy-Cons, but unlike the Joy-Cons, the left and right sides of the Junglecat never make a direct physical connection to your phone. They pair together automatically and connect to your phone as a combined bluetooth device.
Razer says the Junglecat's battery lasts for more than 100 hours, and after more than a week of regular, use I haven't needed to recharge. Oddly, the two sides of the controller charge separately, but with such a long battery life, it's not too much of an issue.