It is convenient to use. You can clip it on your phone. With 3 different levels of brightness, you'll find the perfect lighting that you needed. It also helps you to get higher quality pictures when natural light is not available. Can be used in beauty industry, jewelry industry, photography, etc. Item Name: Macro Fill Light Material: Plastic + Glass Charging Voltage: DC 5V±0.5 LED Number: 50 LED Battery Capacity: 100mAh (Included) Brightness: 26-28Lumen, 550Lux Magnification: 15X Standby Time: About 1 Month LED Color Temperature: Warm Light: 2800K, Medium Light: 4000K, Cold Light: 6500K Features: Portable, 3 Levels Brightness, Clip-on, Rechargeable Diameter: 68mm/2.68inch (Approx.) Length: 95mm/3.74inch (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 x Macro Fill Light (Phone Not Included)