Fangrui Product Details Multiple Flash Modes:versatile M/s1/s2 Modes And Auto/manual Zooming For Diverse Lighting Scenarios. Long-lasting Performance:up To 230 Full Power Flashes With Ni- Batteries, Ensuring Extended Sessions. Gn60 High Guide Number:powerful Gn60 Output Ensures Even Illumination Across A Wide Range Of Lengths. High-speed Sync (hss):achieve High-speed Sync Up To 1/8000s With Compatible Triggers For , Clear Images. Specification: Guide No.(1/1 Out@105mm): 36(m Iso 100) Flash Duration: 1/350 To 1/20000s Flash Coverage: 24-105mm, Auto Zoom/manual Zoom Swinging/tilting: 0 To 270 Horizontally And -7 To 90 Vertically Exposure Control System: Ttl Autoflash And Manual Flash Flash Exposure Compensation(fec): Manual, :3 Stops In 1/3 Stop Increments(manual Fec.) Sync Mode: Hss 1/8000s, First-curtain Sync, And Second Curtain Sync Multi Flash: Provided(up To 90 Times,99hz) Wireless Flash Function: Master, Slave, Off Controllable Slave Groups: 3(a,b And C) Transmission Range: Lessthan 30m Channel: 16(1-16) Auto Focu