Our suction cup phone mount works perfectly well on windshields. The phone holder contains a one-key lock suction cup base with a diameter of 3.3 inches, a dual-ball head arm that offers universal adjustment, and a one-touch lock/release phone clamp. The side grip phone clamp is a self-owned patented design of LanParte. Two metal buttons on top make it easy to open the phone clamp with one hand, and the silicone pad prevents phone slippage. The small ball head base connected to the phone clamp allows it to be adjusted independently. Made in a peasecod-like structure with two ball heads, the unique structural design of UBA (universal ball head arm) allows for flexible adjustment of the mount angle. Made of aluminum alloy, stainless steel, and high-strength composite materials, the suction cup phone mount withstands heavy duty usage and maintains a secure grip on the phone. SC-01 suction cup base is also the self-owned patented design of LanParte. With the unique design of a threaded locking, the suction cup has a firm mounting performance while ensuring easy operation. To further enhance the functionality of our suction cup phone mounts, we offer optional accessories.