The AD200 TTL Pocket Flash Kit has a standard speedlite head and a bare bulb head that gives you the option of 2 distinctly different qualities of light. The speedlight head outputs the standard look of an on-camera flash that can be modified using an optional softbox, beauty dish or umbrella. The bare bulb head features a removable flash tube and produces 360 degrees of soft, bright, nearly shadowless light. The flash uses a Li-ion polymer battery which charges fully in only 4 hours and is lasts for 500 full power flashes with a 0.01 to 2.1 second recycling time. The kit includes 2 heads, lithium battery, charger and carry case. Features Built-In 2.4 GHz Wireless X SystemBuilt-in wireless receiver: control triggering power level, alert beep with optional wireless transmitter. Compatible with Nikon, Canon, Sony, Olympus, Panasonic and Fuji TTL. Bare Bulb and Speedlight Flash HeadsBare bulb and speedlite flash heads are included to vary your quality of light. Color temperature is a steady 5600K over the entire power range. Large Capacity Lithium Battery PackThe 14.4 V / 2900 mAH battery pack gets 500 full power flashes with 0.01 to 2.1 sec. recycling. AV PanelEasily readable digital panel displays your adjustments AccessoriesBarn Doors, color filters and diffusers are available to personalize your work. Additional Functions8 Steps of power adjustment (1/1 to 1/128) offer better lights effects. Fully support flash exposure compensation, 1/8000 sec high-speed sync, second-curtain sync, modelling lamp, manual flash, multi flash, C. Fn custom functions, etc. Read More