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FMT H101 2.4G Remote Controlled Electric RC Racing Boat$19.99
Only Work in Water Fucntion. Low battery alarm function: Low battery alarm warns you when the boat is almost out of power,control back after reminder The boat is blazing fast, the speed about 25KM/H. You will be surprised at how fast it is for being a relatively small and inexpensive boat.
Advanced 2.4G technology of frequency connexion.