Unique Features: While other headset stands only offer a place to store your headphones, the COZOO Headset Stand is equipped with 3 USB Charging ports, providing easy Charge to your Devices. Fast Charging 4.0 amps output enables the power strip charge 3 devices including your tablets and smartphones simultaneously at full speed, save your time up to 50%. With the smart technology, it can automatically identify the type of device and deliver the suitable current for your device like the original power adapter. Mounting tips: 1.Clean and dry the surface of the desk and the stand before installing. 2.We recommend you wait 24 hours to make the adhesive fully secure so that there is enough adhesive force between the desk and the headphone stand. 3.If hanging weight more than 500g . please install the screws. 4.This adhesive is very sticky with good quality in order to mount steady . If you can't take the adhesive cover off , You can use the hair dryer to heat it and tear it down. Specifications: Material: Fireproof ABS+PC Rated Input: AC 110-240V, 50/60Hz USB Total Output: DC 5V 4.0A (max) Power Cord Length: 6.6ft / 2m Overall Dimensions: 5.1 × 4 × 2.4 inchs / 130 x 102 x 60 mm Headband Plate Dimensions: 2 × 1.2 inchs / 50 x 30 mm each screw Dimensions: Φ0.16 × 0.6 inch / Φ4 × 15 mm Weight: 5.8oz / 165 gPlease Note: The USB ports functions as a USB Charging only, for charging your Phones or Tablets. And it's not as a USB Hub to connect the devices to your computer. Headphone in the picture is not included.