1.Wireless transmission frequency (within 15 meters of signal), which greatly guarantees the stability of wireless transmission.2.Wireless 433MHZ transmission,support to customize navigation APP button function.including "+" "-"buttons, "" "" buttons, confirmation buttons, and rotation adjustment buttons3.By i-safe controlling multimedia,make the driving safer.4.It adopts 7-bit function button design, which is enough to meet the basic function settings.5.Built-in battery protection mode to improve battery life.6.Fashionable appearance design, suitable for most models on the market.7.Another way to use the split structure can be placed in any position in the car, which is convenient and concise.8.Wide range of applications, universal design, fit for all cars stereo radio without physical buttons9.Safe driving, adding physical buttons for large-screen car navigation, making driving safer10.Easy to install, use glue to stick to any position you like,just use a simple wiring installationSpecifications:Din: One DinModel Name: I-SafeOSD Language: EnglishIntroduction of wireless control system:The wireless knob controls the navigation host through wireless transmission signals, and the user can customize the function of each button through the APP. Convenient and fast, conducive to driving safety.Material:plasticcolour:Chrome + blackPackage Contents:1 x Controller knob1 x Adhesive stickers1 x CableOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.