B, This is a Lighting Device Designed for 3D Printing, Paper, Laser Cutting or Any Other DIY Lamps.

This is a lighting device designed for 3d printing, paper, laser cutting or any other DIY lamps. The Toolmoon website offers a variety of 3D lighting model files for users to download for free Aluminum-Alloy Made Lamp Holder - Aluminum light socket with 1W LED warm yellow light, quick radiation DC Connector - With DC 5V design, you dont need to spend much time on power adaptors anymore. USB Connector - with Touch Dimmer Switch on the Line. Suitable for 5V USB ports such as computer, mobile phone adaptor and portable battery.