Spring-loaded 'X' design for large phones with rubber caps sports great holding power without hiding your phone; includes optional device tether for peace of mind during rugged use | Includes RAM Twist-Lock suction cup base ideal for vehicle windshields and long length, B size RAM double socket arm; ball and socket technology allows for near-infinite adjustability | Made of powder-coated, marine-grade aluminum, stainless steel components, and high-strength composite for durability and reliability in the most demanding environments | Backed by a lifetime warranty. Please contact our Seattle-based customer service team if there are any problems with your product. | Compatible with iPhone 6s Plus,iPhone 7 Plus,iPhone 8 Plus,iPhone Xs Max,Drive 50,Drive 51 LM,Drive 61 LM,DriveSmart 51 LMT-S,DriveSmart 61 LMT-S,DriveTrack 71,RV 660LMT,RV 770 LMT-S,Google Pixel 2 XL,Pixel 3 XL,Pixel 3a XL,Huawei Mate 20 X,Motorola moto e4 plus,moto g4,moto z2,moto z2 play,moto z3,Samsung Galaxy A7,Galaxy A7 (2017),Galaxy A8,Galaxy A8 (2016),Galaxy A9 (2016),Galaxy A9 Pro (2016),Galaxy J7,Galaxy Note 10 Plus,Galaxy On7,Galaxy S10 5G,Galaxy S8,Galaxy S8 Active