dash cam backup camera extension cable constructed with high quality parts: anti-oxidation gold-plated plug, stable signal transmission, anti-interference. 4 pole extension cable works with most dash cam backup rearview camera. Works with any device that uses a 2.5mm 4 pin plug. Please make sure your device cable has 4 poles/conductors as shown in the picture. Material: pure copper core Package included:2Pack 10inch 2.5mm Right Male to Female 4 Pole Extension Cable