Flash Display: Large LCD Panel. Guide No. :60 (ISO 100,105mm Zoom). Color Temperature :5500+100K. 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 & 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. & Outdoor 10-15 Mtrs. Optical Slave: Instant Sync Mode S1 & S2. Power Saving :Available. Flash Recycle Time :About 0.5-3.2 seconds. Additional Features :FEC, AEB, Manual & Auto Zoom, Over Heating Protection. Peripheral Interface :Hot shoe, PC Mount & External charge Mount. Power Source :4xAA Alkaline / Rechargeable (Ni-MH) Battery. Lighting Time: 100-1500 times (Using AA Alkaline Cells)