A cracking RC boat for under £40 - twin outboard engine derive power from the Nickel Cadmium battery. At full usage, you'll get about 25-30 minutes usage off a full charge (the slow charger means a full charge takes 5 hours). However, the speed you can supposedly get up to is around 30kph and watching it, it really does fly across the water. As with any props, avoid matter in the water or they will get tangled meaning you'll limp the boat back to shore to repair it with one engine working. Range is approx 60 metres but I wasn't willing to push it further than that or I'd have not got it back!
The downsides are slow recharge time and only 25-30 mins usage. There's no analogue rc speeds so it's either full pelt forwards or stop as well as the turning. Instructions are very limited and if you do buy one, the clear plastic 'straw' to extend the antenna is hidden well so make sure you find it!
All in all this is a great product and a safe bit of kit. I liked it and so did my girlfriend which came as a bit of a shock to be honest!