The S-107 3 Channel Metal Series is one of the best flying micro RC Helicopters one can buy today!Features a fully proportional dual stick infrared transmitter with a precision dial trim for quick and easy adjustments of tail sway. Has a realistic looking injected molded main body that is built to last. Dual motor design gives unprecedented power from a micro helicopter this size. A New generation gyro makes it hover hands off with no input at all ! As a Bonus! we include a USB cable for laptop or computer charging. Includes 3 CH Radio, USB charger, and one extra tail rotor. Available in Red and Yellow colors.Controls:The S170 can be controlled to go up, down, forward, backward and turns left and right.Flight Time:Can fly up to 8 minutes on one charge.Charger:The charger is built into the radio and as a BONUS! also includes a USB cablethat can get power from a laptop or desktop computer.Channel A,B,C:The S170 has 3 diffrent channels built into each radio(A,B,C) that allows for 3 RC helicopters to fly at one time.