Voeloon V100 General Type Camera Speedlite Description: VoeloonV100(Oloong SP-660) Universal Professional Speedlite 1) GeneralType Speed light, Simplicity, Wonderful, Readily, Available 2)Guide Number:35(ISO100,35MM) 3) Fast recycling time:2s(full poweroutput, 4*AA Ni-MH batteries) 4) 25 levels light quantity outputcontrol system 5) S1/S2 flash mode(support for multiple lamplighting system) 6) Overheating protection(comes with thetemperature detection system) 7) High-definition LCD and LEDbacklit 8) Large capacity electrical storage system 9) Soundmonitoring system 10) Xenon lamp overheating protection system 11)metal mounting foot; V100 flashlight use pure copper metal mountingfoot design, effective solute the wear and tear of the mountingfoot caused by the demolished, and it is more solid. 12) CE, FCC,ISO9001 & ISO1400