Features: Bluetooth connection Applicable models 1: Android OS 4.4 or above Applicable model 2: iOS 8.0 or above Item Type:Remote Controls Item Weight:35g Small and , easy operation For cars, bicycles, motorcycles and everyday life Control volume Play / Pause Power supply:CR2016 Button battery Not suitable for:Not suitable for Android car stereo Not suitable For:Not suitable for Android tape recorder, car radio / DVD / CD / audio Just suitable for connecting mobile phones and tablet PCs. Not Suitable for car device / car Android tape recorder / car audio / radio / DVD / CD / Navigation / car tablet Colour:black Material:plastic Size:3.6*3.6cm Package Contents: 1*Steering wheel controller Only the above package content, other products are not included. Note: Light 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.