UGREEN Gravity Car Phone Holder with Auto Vent Mount Support Stand - Space Grey Constructed from Aluminum Alloy + ABS Silicone for a sturdy and long-lasting finish. Utilizes Gravity Linkage, allowing the holder to automatically secure your phone snugly. No more fumbling to mount your device Notable for maximum compatibility, the holder supports phones with cases less than 3mm in thickness. The holder locks automatically through gravity and thus caters to the vertical mode of your phone. However, it is not designed to handle horizontal orientation. The variable 360-degree rotation offers flexibility; keep in mind it only supports the vertical mode. Attention to detail is vital. Make sure the clamps are tightly inserted into the air vent mount to prevent any mishaps whilst driving.