WLtoys V931 2.4G 6CH Brushless 3 Blade AS350 Scale Flybarless RC Helicopter RTF 3D 6G Gyro Plane Toy 2 Colors Optional-Blue Or Red, We Will Ship Randomly. Please Take Into Account and Choose the One You Request. Thank you. Just Mode 2 (Left Throttle) Controller Instock. If You Request Mode 1 (Right Throttle), Please Buy It Separately.Thank you. Make Sure the Battery Power is Full Both for TX and Helicopter. Before Open The Power Of TX, Please Make Sure the TH. Stick At the Bottom and the Switch of TH.HOLD And 3D Mode in Back Positio(Back Cover Direction). Make Sure the TX is Binding with Helicopter, Or Please Rebind Them.