Description: It is suitable for DIY upgrade and modification of vehicles, ships and tanks.Made of high-quality plastic material, strong and durable.2.4G technology, strong anti-interference ability.Customers need to bring their own 4 AA batteries.Out-of-control protection function, to avoid loss due to out-of-control, please refer to the instruction manual for specific setting method. Specification: Material:PlasticType:Receiver & Transmitter SetAge Level:17 Years & Up Size Chart: Remote Control: 113x70x190mm/4.4x2.8x7.5inchReceiver: 32x18mm/1.3x0.7inch Package Includes: A: 1 Piece Remote Control + 1 Piece (3+1 Channel Signal) Receiver + 1 Piece Frequency Line + 1 Piece ManualB: 1 Piece Remote control + 1 Piece (3+1 channel signal) Receiver + 1 Piece Lithium Battery + 1 Piece Frequency Cable + 1 Piece ManualC: 1 Piece B4 Remote Control + 1 Piece 160A ESC + 1 Piece (3 + 1 channel signal) Receiver + 1 Piece Frequency Line + 1 Piece ManualD: 1 Piece Receiver (3+1 channel signal) : 1. Please allow slightly error due to manual measurement.2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!3. Wish you a wonderful on-line shopping!