It's a nice racer, but unfortunately not really waterproof. The battery lasts up to 15 minutes and must be charged with the original charger exactly 4 hours. The charger has no automatic switch-off and must be unplugged for quite recall exactly 4 hours. We have a stronger battery (X-Cell RC Pack 9.6V 2000mAH Battery for Toy Vehicles) and bought a charger with automatic switch-off to NICT but the recommended "Carson 605016 - Quick Charger 2A Delta Peak", which does not fit the battery. Now it's a really hot racer, which must not be too wet grip.