Manual adjusting 2" LCD display Type: Xenon flash tube Flash index: 33 (ISO100 in meters). Flash duration: 1/1050s (under output 1/1) Flash recycling: 0.3~5s Wireless transmission range: Indoors 12~15m/39.4-49.2ft; Outdoors 8~10m/26.2~32.8ft Reception angle: 40 degree horizontal, 30 degree vertical External power: CP-E4 Internal power: 4 x AA alkaline batteries or AA Ni-MH / lithium batteries also usuable For: Canon 450d / 550d / 600d / 40d / 50d / 60d / 7d / 5d2 / 5d3, etc. Nikon d3000 / d3100 / d5000 / d5100 / d90 / d7000 / d700 / d300, etc. Pentax K5 / k-r / k7, etc.