Cellet PHHD130 Car Air Vent Phone Holder for Samsung Galaxy S8, S8 Plus, Samsung Note 8, Apple iPhone X, iPhone 8, iPhone 8 Plus  and MP3/MP4 up to 3.6 Inches Wide Mount your phone or MP3 player securely and safely by using your car air vent Spring arms can accommodate phones up to 3.6 wide Silicone cover on spring arms firmly hold your device in place Position your device either horizontally or vertically Easy to install