... no.28(ISO 100,M)2,5600K color temperature:5600k3,Flash lamp holder tilting -3°- 90° level circumgyrate ,left right 330 ... °,circumgyrate in in order to reflector flash or flash photographic Product Size Electronic construction:Automatic insulated gate bipolar transistor ... 100M);red /F4 aperture 1-7m/3-23ft(ISO 100M)flash time : appro:400 manual full light outputbounce ability:tilt 0 ...