Bracketron BT1-542-1 Universal X-Treme Mount - Black Compatible with most cell phones Allows you to easily charge most USB-compatible devices from your vehicle's 12V power port while you're on the go. Device holder expands from 2-1/8" to 3-1/8" and expandable height from 4-3/8" to 5-9/10" for wide-ranging use. Tempo bond base lets you secure mount your phone to most smooth or textured surfaces, Maintains access to your device's controls and ports.