Flash Display: Large LCD Panel, Guide No. :60 (ISO 100,105mm Zoom), Color Temperature :5500plus100K, PC Sync Port: Available, Flash Sync Speed :High Speed Sync up to 1/8000s Rear Curtain, Zoom Position for Nikon :18-24-28-35-50-70-85-105-135-180mm, Zoom Position for Canon :24-28-35-50-70-85-105mm, Horizontal Rotation Angle :0-180 Degrees, Vertical Rotation Angle :7-90 Degrees, Flash Modes :TTL / Manual / Multi / S1 and S2, Flash Control: 8 Grade Hi-Speed control (1/128-1/1),Step Length : .3EV, total 22 Fine Tuning Stall, Wireless Distance :Indoor 20-30 Mtrs. and Outdoor 10-15 Mtrs. Optical Slave: Instant Sync Mode S1 and S2, Power Saving :Available, Flash Recycle Time :About 0.5-3.2 seconds, Additional Feature :FEC, AEB, Manual and Auto Zoom, Over Heating Protection, Peripheral Interface :Hot shoe, PC Mount and External charge Mount, Power Source :4xAA Alkaline / Rechargeable (Ni-MH) Battery, Lighting Time: 100-1500 times (Using AA Alkaline Cells).