Volantex Vector 28 2.4G RC Boat Multicolor Waterproof Speedboat Waterproof design for electric equipment, Water cooling system included 2.4Ghz spread spectrum technology: better anti-interference ability, allow more than 20 boats to sail at the same time ULTRA MINI SIZE: You can have a professional racing quite easily even in a swimming pool. Overall Length: 27.65cm (10.88 in); Hull Width: 7.25cm (2.85 in); Weight: 176g RTR Ready to Run, no installation required; ABS moulding which is durable and smooth