To answer some of the manual of this device: it automatically detects the flash of your camera (note the pre-flash) and if the 2 LEDs light then triggers the same time as your main flash (built-in flash or accessory). An LED indicates power and the other the burden of flash light (green and orange)
Since it is a flash lamp, it illuminates in flash! the switch on the socket is useful to turn off without having to disassemble, but it also allows you to mount a conventional bulb (standard E27 base). We can then make the permanent light and it works very well with low power filament bulbs or bulbs. you just pay his correct white balance on his case. (Not everyone thinks about it ...)
diameter for the umbrella to mount different sizes of reflectors and tripod allows 2m high indoor use with SLR provided you have a ball like this for example Hama - 05014 - Accessory for Camera - Kit with fixing screws B1 / 4 "- Height 50 mm - 30 mm diameter
The price of a tripod light in France is often already higher than the set value then I never found better on several years of research on the net and shop.
The carrying bag is simple but very useful for storing a tripod 2m which held anyway in any camera bag. The lamp stand and cables neatly in a small camera bag like AmazonBasics - Camcorder Shoulder Bag [package "Free Packaging Amazon Frustration"] but you can find cheaper now as bag ...
