1 x Speedlight, 1 x Bare Bulb Flash Head 1 x Lithium Battery, 1 x Charger Built-In Wireless X System Receiver HSS: 1/8000 sec, Battery: 500 FP Flashes Optional X1 Wireless TTL Transmitter Supports Nikon, Canon, Sony TTL Supports Olympus, FUJIFILM TTL Flash Exposure Compensation TTL, Manual, and Stroboscopic Modes Firmware USB Updates, 1 x Carry Case