It can be easily adjusted by hand to an angle of (10° to 45°) and held in one position, which helps to fix your posture and reduce tension in the neck and back. Metal frame, universal represents almost all smartphones and tablets. This is a great desk accessory for your office and home. Made of high quality material, durable and practical to use It is ideal for watching videos, reading and learning, playing games, making video calls and video conferences, using Facetime and watching YouTube. Material: Aluminum Alloy Optional Color: Silver, Black Angle adjustment: 45 degrees