4 in 1 multifunctional car cup holder: It's not only a car cup holder, it's also a good cell phone and card slot. The car cup holder extender can hold the driver's and co-driver's drink cup or glass at the same time. It has a place to store your phone or cards and a place for aromatherapy. It has a unique design and many functions. Adjustable 360 rotation: The base can be rotated 360 freely. It allows you to adjust the bottom of your drink to any position that doesn't get in your way while driving. The phone or card slot can be placed on the left or right, allowing you to easily answer hands-free calls, play music or charge. It keeps your phone always in view without obstructing your view, thus ensuring the safety of your driving. Retractable base, non-slip and shockproof: The bottom is equipped with non-slip silicone and shockproof foam, which allows the car cup holder to stand firmly on the cup holder while driving, so your phone won't fall out and water and drinks won't swing around or overflow. < p>Multi - size compatibility: You can install all smartphones up to 4.13 inches (10.5 cm) wide by simply pressing the button on the right side of the cup holder extension with phone holder. There are silicone rubber bands in the cup holder, the size that can hold the cup varies from 6cm to 9.5cm (2.35" - 3.75") inches; Car drink holder adjustable from 6.5cm to 8cm (2.55" to 3.15") inches.