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The dimensions is 178mm(width)*53mm(height)*166(lengh)(6.89inch*2.09inch*6.54inch.
We recommend reading the user manual carefully at least once before installation and also make sure all the accessories are ready.
According to the customers feedback for installation, we suggest you disconnect the battery before handling with the wiring or plugging in the unit,otherwise you might cause damage to it. Please do let us know if you have any problem with install the car stereo, we will try our best to solve problems together.