Large LCD DisplayBack Light On-Off SwitchHSS Delay Setting – 0~19.9ms, (100us Increments)Modeling flashAuto Memory FunctionAF Assist light (With an On/Off Switch)Wireless Shutter ReleaseMicro USB Port for Firmware UpgradesTransmitter PC Sync Port – Input & OutputReceiver 2.5mm Sync and Shutter R..