2011 new water bumper boat 1.Weight: 17.5 kg (without battery) 2.Running time: 5 hours total (full post) 2011 new water bumper ... its role, oval tire provides stable boat, a propeller diameter of 6.5 cm in water and strong operation, equippedwith a timer ... (weight not exceeding 75 kg) B),Market advantage: Children can water bumper boats recreational activities, entertainment, when full of novelty and ...