The Godox AD-H400P Portable 400Ws Extension Head with Bowens / S-Type Mount is a versatile flash head designed for handheld or light stand use. It features a tilting receiver and a Bowens front accessory mount, allowing for easy attachment of compatible accessories. The AD-H400BP model specifically enables you to connect one battery-powered AD400 flash head. Please note that the flash tube for the head needs to be purchased separately. With its portable design and flexible mounting options, this extension head is a convenient and reliable choice for various photography setups.