It has a band brake, but...... it's only on one wheel (left rear) and there is a tension limiter (spring) in line with the brake rod. And the tires - even if it locks up there's no tread - it's just gonna slide. It does have neat little link that when you lift it locks in as a parking brake.
My grandson should do OK with it. He's used to our minibike which has even less braking. It's got one of those "paddle brakes" that presses on the rear tire - kind of like the wood carts in "Our Gang" films - a stick with a nail pivot to rub on the tire!
Al