2.4Ghz Radio Control High Speed Pool Racer Tumbler Speed Boat ABS Unibody RC RTR (Color May Vary) Super high speed bring you a lot of fun; Perfect size for pool racing; Water cool system included; Waterproof design for electric equipment RTR ready to run version no installation required; ABS moulding which is durable and smooth ULTRA MINI SIZE: You can have a professional racing quite easily even in a swimming pool. Overall Length: 26cm (10 in) Ready To Run. Request 4 AA Batteries for Remote.