The Profit A1 Duo Kit for Canon is designed with light shaping capabilities; it has a unique round head with a soft, smooth fall-off that makes it easy to create a natural and beautiful light. It also has a smart magnetic mount and three dedicated A1 Light Shaping Tools included that click on and off quickly and easily -a Dome Diffuser, Wide Lens and Bounce Card. They can also be stacked for more creative options. The A1 also offers a built-in LED modeling light that makes it easy to set the light and understand how light and shadows work together. And it's extremely easy of use. The user interface is large, clean and clear. Like all Profit products it's intuitive to use and you don't need to read a long instruction manual to understand how it works. AirTV remote is also built in to the A1. With AirTV and HSS you create professional results fast and easy and with the remote you can seamless connect to other Profit flashes and control them easily from the A1. Profit A1 is not only an on-camera flash, it's also very effective off-camera as a stand alone unit. The A1 has its own Li-Ion high capacity battery built-in which lasts up to four times longer than AA batteries with no performance fade, and a facility to recharge quickly. So, you can shoot for longer with confidence. A1 can keep up with you because it recycles four times faster than other on-camera solutions -that's 1. 2s at full power. Put simply, you'll never miss a shot. FEATURES: Round head with soft, smooth and natural fall offAirTTL and HSS for a beautiful professional image fast Smart magnetic click-on mount for A1 Light Shaping Tools5 dedicated A1 Light Shaping Tools available LED modeling light integrated to the head Air Remote built-in Rechargeable and exchangeable Li-Ion battery1. 2s recycling timely/MAN switch Built in motor-zoom with hand control Auto focus (AF) assist Large Hi-Res display