The 3D stand with its 360 degree swivel arm and head permits you to position your digital microscope or camera at any angle as well as provides you with a great range of motion. Single tension knob allows for quick positioning. The high powered LED light, mounted on a 254 mm (10”) flexible arm, can be directed in any position for additional illumination. The LED lights are USB or battery powered (4 AAA which are not included). LED lights can be turned on or off and adjusted for brightness with the control knob mounted on the back of the stand.