The B10 is a very small batterypowered 250WS flashhead. It can be only syncronized with the Profoto Air Radiosystem (Air Sync/Air Remote/ Air TTL). There is an IOS-App to control up to 3 units at a time. The B10 also features a Bicolor LED modlight with an CRI of 90-95 with about 75 minutes running-time per Battery. So the B10 can be used for mixed media jobs like wedding, reportage or trips where filimg and photography is needed. The B10 is compatibale to the Profoto reflectors system. The B10 can be charged while in use and the charger can be attached to the stand of the B10. Our Duo Set comes with a 2x B10 head, 2x mounting, 2x batteries and 2x charger together in a backpack.