Features: The for AD400Pro Flash Tube offering a powerful 400W output, ensuring optimaled compatibility and enhancing flash effects for your photography needs. This durability and stable flash tube provides consistent brightness and a steady color temperature, making it essential accessory for AD400Pro. For professional photographers and photography enthusiasts who seek superior lighting solution elevates their experience. Perfect for various photography setting, including outdoor wedding photography, and commercial advertising, where reliable and soft light is important. This original bare bulb designing ensures easy installation for AD400Pro, delivering diverse lighting effects with its lightweight and durability construction. Specifications: Size：about 78x61mm/3.07x2.4in for AD400pro Flash Tube Output: 400W Package Includes: For AD400pro Flash Tube note: Due to problem of lighting effect there might be tolerances in product, please understand. Please allow 0-2mm error due to manual measurement.