Indoor Use only Turbo Speed Booster- 3-Channel System (6-Way Controller) 2.4 GHz transmitter Gyro Stabilizer LED light R Exclusive, only available at Toys R Us Canada. Take flight with the Sky Rover Knightvision helicopter! Great for beginner pilots learning to fly RC helicopters. The Knightvision model helicopter uses four roto blades, a rechargeable lithium power battery, and comes equipped with a gyro stabilizer. Enjoy the Knightvision indoors with its turbo boost feature!