ITEM NAME:RC Crawler Car Wireless Remote Control Winch for Traxxas Hsp Redcat Rc4wd Product Description Description: Aluminum Alloy Remote Control Winch for Traxxas RC Crawler Car Accessories RC Crawler Car Aluminum Alloy Wireless Remote Control Winch for Axial SCX10 D90 Features: 1.High-quality aluminum alloy casting. 2.Durable. 3.Make your car more cool. 4.Cool appearance,better quality and technology. 5.Suitable for Traxxas Hsp Redcat Rc4wd Tamiya Axial SCX10 D90 Hpi brand climbing cars, off-road vehicles modified paarts. Specifications: Material: Aluminum alloy Cable length: 20cm/7.87 " Remote control size: 5.5 x 3 x 1.5cm/2.17" x 1.18" x 0.59"(not included chain's lenghth) Study method: Turn on the power indicator light for 3 seconds, press the learning button once the indicator goes out, when the indicator lights, press the remote control button indicator goes out, learning success. Clear code method: Turn on the power indicator light for 3 seconds, press and hold the learning button after extinguishing until the indicator light, 8 seconds after the light goes out, the code is successful. If the product indicator does not light, when not working, you can set through the above. Power: The product voltage is 7.4V, acceptable voltage is 5-12V. Note: Please allow 1-2cm size deviation due to manual measurement. Included: 1 X Wireless Remote Control 1 X Winch.Turn on the power indicator light for 3 seconds, press and hold the learning button after extinguishing until the indicator light, 8 seconds after the light goes out, the code is successful. If the product indicator does not light, when not working, you can set through the above.