Features: Innovative LED technology, high-quality LED light close to natural light, seven levels of luminance status, new functions of photography lights to meet higher photography needs. 48pcs LEDs rated at 3000-15000K makes higher luminance and lower static power consumption. The left flash and right flash function makes objects appear more dimensional. It is applicable in the field of macroshots, scientific research, medical fields, and personal photography. High definition LCD display screen shows more vivid and clear objects. The ring flash can be mounted on a video camera/camcorder as photography light. Providing soft, shadow-free lighting. Eight diameters of adapter rings for alternative use 40.5mm, 52mm, 55mm, 58mm, 62mm, 67mm, 72mm, 77mm. Specifications: Model: HD-130 Guide Number: 15 Color Temperature: 3000K-15000K Exposure Time: 1/100s Compatible Battery: 4pcs AA batteries (Battery is not included) Flash range: 5cm-2m Item Weight: Approx. 200g / 7.1oz Package Size: 16 * 12.5 * 9.6cm / 6.3 * 4.9 * 3.8inch Package Weight: 373g / 13.2oz Package List: 1 * Macro Ring Flash Head 1 * Power Control with LCD Display 8 * Adapter Rings (40.5mm, 52mm, 55mm, 58mm, 62mm, 67mm, 72mm, 77mm) 3 * Translucent Diffuser (Blue, Orange, and Transparent) 1 * User Manual (English & Chinese) Note: Camera and battery are not included.