The phone holder is compatible with most smartphones (maximum width 8cm). The arm allows you to mount the lights on the table easily and adjust the angle of the smartphone as needed. With a variety of color temperature options for ultimate natural lighting and Ra80+ to protect eyes from damage. Theringlight can also rotate to 360 degrees to shoot perfect videos and selfies from any angle. Function ~ 3 color temperature selection with 10 levels of brightness ~ USB power supply is universally compatible with most devices, including AC adapters, power banks, laptops, etc. ~ Matte surface for soft lighting ~ 360 degree rotation ~ lightweight and portable ~ foldable and lightweight metal stand with clip ~ 1 year specification ~ maximum height: 101cm ~ input: DC5V = 2A ~ power: 12W ~ color temperature: 3000K-6000K ~ ring outer diameter: 26 cm ~ ring inner diameter: 20 cm ~ Mobile phone holder maximum width: 9 cm ~ clip maximum width: 5 cm Package includes: 1 x LED light 1 x universal phone stand 1 x arm cassette clip 1 x smartphone