5V USB Powered: USB power supply, can be powered by computer, power bank, or power adapter easily; The cable controller enables you to power on/off, switch lighting modes and adjust brightness levels conveniently.
With Phone Holder & Webcam Mount: 5.5cm-8.5cm adjustable phone holder fits most smartphones on the market, compatible with iPhone, Huawei, Samsung smartphones and so on; and with a mount adapter, you can use webcam with this LED ring light for online video.
Flexible Arms & Strong Clamp: Flexible arm design, you can adjust the usage angle of ring light and smartphone freely; the b metal clamp enables you to fix the bracket to desk steadily.
Wide Applications: Not only suitable for selfies, but also can be used for live streaming, video recording, online singing & chatting, book reading, or even use it as a keyboard light.

Specifications:
Power Supply: 5V USB
Lighting Mode: warm light, mixed light, cold light
Brightness: 10 levels
External Diameter: 9cm/ 3.5in
Internal Diameter: 5cm/ 2in
Cable Length: about 1.3 meters  
Phone Holder Width: 5.5cm-8.5cm/ 2.2in-3.3in
Clamp Width: Max. 8cm/ 3.1in
Item Weight: 450g/ 15.9oz
Package Size: 19 * 15.5 * 8cm/ 7.5 * 6.1 * 3.1in
Package Weight: 584g/ 20.6oz

Note:
The smartphone and webcam showed in the pictures are not included.

Packing List:
1 * LED Ring Light
1 * Phone Holder
1 * Mount Adapter