AA (4) batteries with a Tower Hobbies 2 or 4 Channel Radio.
224 2-Channel 2.4GHz Radio System
The Tower Hobbies 224 2-Channel 2.4GHz Radio System is our most dependable surface system ever! It virtually eliminates the chance of same-channel interference by using Spread Spectrum technology —and moving your signal from one channel to another hundreds of times every second. Its lightweight receiver responds ONLY to the unique signal coming from your 224 transmitter. The best news of all? Traditional TOWER value means that now, you can afford 2.4GHz technology too!
Dimensions: 1.8 x 1.0 x 0.5 in (45.7 mm x 25.4 mm x 12.7 mm), Receiver weight: 0.3 oz (94.5 g), Requires: Servos, 8 “AA” cells and NiCds or NiMHsDownload Instruction Manual: Need Extra Receivers? Click Here!