Basic propo for electric trailers & trucks 2.4GHz (FHSS) specification The receiver comes with a built-in antenna, making it perfect for combining scale models and more. ATTACK 4YWD T/R Set: Transmitter:T4WD (FHSS),Receiver:R214GF-E Antenna Built-in Receiver (FHSS) Product Features: The 4YWD is a model that allows you to enjoy your electric trailer or truck model at an affordable price. The receiver comes with a built-in antenna, so it is perfect for mounting on scale models that focus on appearance. The propos also include a shift gate for gear box control. [Features/Specifications] 4ch FHSS receiver (with built-in antenna) 4ch FHSS Transmitter (with built-in antenna) Transmitter Power: 6.0V (4 x dry batteries) Battery level indication: LED (2 levels) Servo Reverse Non-Slip Adjustable Lever Head Includes shift gate Power supply is required to drive this product, but not included with this product. This product does not include fuel, batteries, batteries, charger, paint, glue, oil, grease, tools, etc.