With the D2 Duo 1000/1000 AirTTL 2-Light Kit, Profoto offers two advanced high-performance 1000Ws monolights with power cords and a padded case. At 0.03-1.2 sec, the D2 is almost twice as fast as its predecessor and capable of 20 flash per second bursts. Other features include wireless TTL with the separately purchased Air Remote TTL-C for Canon and TTL-N for Nikon, compatibility with Profoto Control and Profoto Camera apps , action-freezing flash durations and High Speed Sync support up to 1/8000 sec.