The Hensel Certo Portrait Kit includes two new strobe units Certo 200 and Certo 400 intended for series amateurs and new professionals alike. These flash units provide a strobe duration of 1/3400th of a second and recycling speed between 0.4 and 1.1 feet. Both the flashes cover an f-stop range of 6 to 7 in 1/10th steps. These strobes come with a 16-channel integrated radio system that allows wireless operation. The active cooling feature keeps the unit from overheating even while using the 150W halogen lamp as a modeling light source. With the safety glass, the user remains safe from the bulb's heat. As the flash tube and safety glass tube are attached to the base plug, you can easily swap them during replacement. You can use the Cactus Flash Transceiver V5 for a wireless flash setup. Its Frequency Self-Tune feature automatically adjusts to the best frequency available in extreme weather. WIth the transceiver, you can trigger up to 4 light sources at a time. The included 60×80 cm softbox is lightweight and can withstand excess heat. It comes with an internal silver coating and a removable front and internal diffuser. The high-quality material construction ensures accurate color rendering. You can use the 7-inch reflector on the strobes to increase the light output. A grid is provided for the reflector to creating a directional beam. Other accessories in the kit include an EH speedring, a Certo light stand, Certo kit bag, 2 US power cords, and 2 150 W modeling lamps.