Raymarine RCU-3 Remote Control. Stay in command of the Raymarine e7 Multifunction Navigation Display without letting go of the wheel.The Raymarine RCU-3 Steering Wheel Remote gives you simple access to frequently used functions while underway.Change range scales, control your music, switch between apps, and even mark a waypoint, it's all possible with the wireless RCU-3 remote.If you don't need the RCU-3 on your wheel, it can also be attached to the supplied lanyard and transform the RCU-3 into a convenient handheld remote control for the e7 Display.Bluetooth wireless technology makes configuring the RCU-3 remote easy.Gives wireless control of the e7 Display from up to 15 feet away.