Product Name: R/C 6CH helicopter Item: 21072 Pack: Colour Box Package Size: 66.5*12*28(cm) Product Size: 31*34*14(cm) Carton Size: 68.5*38.5*62(cm) QTY/CTN: 6 pcs Gross Weight: 12.0 kg Net Weight: 9.5kg Battery Size: 8*AA size for Remote control,7.4v 850MAH lithium size for helicopter R/C Distance: About 100 M Flying Time: About 15 Minutes Charged Time: About 180-240Minutes Frequency: 27/40 MHZ Product Function: 6 Channel R/C Set Included - Complete Forward, Backward, Left, Right, Up, Down, & Pitch Control (Rudder, Aileron, Elevator, Pitch, and Throttle) remarks: Changing circuit protection