Race-tuned and ready to run Fast, stylish and bags of fun the Helion Challenge is everything you could possibly want from an entry-level Ready to Run powerboat If youre looking for an introduction to R/C boating, for yourself or perhaps to interest a younger member of the family, theres a very good chance youll be looking for something thats not only Ready-to-Run, tough and easy to operate but thats also fast, agile and stylish. Nothing quite beats the thrill of tearing across the water at high speed and for this, along with all the reasons mentioned above, the Helion Challenge is the perfect choice. Boasting a wave-cresting top speed, coupled with proportional steering / forward and reverse throttle control, plus a get out of jail self-righting capability, theres little this exciting all-inclusive package doesnt offer. In fact, all you need to add is 4 AA cells for the transmitter and you can be up and running in the time it takes to charge the supplied 2S 7.4V rechargeable Li-Ion battery. Beware though, put it on the water, show your friends and family, and theyll all want a go. Key Features 100% factory assembled and ready to run. Ingenious self-righting hull design. Durable ABS hull. Attractive pre-applied trim scheme. High performance transom-mounted offset rudder. Colour coordinated transmitter. Extended race-tuned propshaft. Water-cooled 390 class brushed motor. Proportional control (left, right, forward and reverse). What's in the box 1 x Challenge RTR self-righting powerboat. 1 x 2-channel, 2.4GHz transmitter. 1 x 2S 7.4V 850mAh Li-ion battery. 1 x USB Li-ion DC charger. 1 x Moulded display stand. 1 x Spare propeller and Allen key. 1 x Comprehensive instruction manual. Specification: Overall length (mm): 445 Hull length (mm): 380 Width (mm): 120 Height (mm): 100 Needed to complete 4 x AA-size batteries for transmitter.