Phottix Indra360 TTL Studio Light (PH00207) Offers 360Ws of power, is adjustable over an 8-stop range (NON-TTL Mode) or +/- 3 EV (TTL Mode), and has a recycling time of 2 seconds at full power. Faster recycle times can be achieved with the addition of the AC Adapter (not included). Up to 300 full power flashes can be fired in a single charge with the included 4000mAh Li-ion battery. Trigger wirelessly up to 328 away in either Non-TTL or TTL Mode with compatible Nikon and Canon cameras via the optional Odin Radio Transmitter (not included). TTL power can be adjusted remotely by +/- 3 EV, from 1/128 to full power Group multiple Indras or Mitros+ Speedlites together or in separate groups and trigger them on one of 32 different channels. Indra is also compatible with Phottix Strato II Transmitters in Non-TTL Mode only Shipped with an S-mount umbrella-type reflector and is compatible with a broad range of other Phottix light-shaping products. Additional radio-capable Odin and Mitros products are also available for purchase separately Offers advanced professional features like High Speed Sync, Second Curtain Sync, Stroboscopic Mode, and Automatic Flash Bracketing for greater flexibility and creative opportunities