Li-ion power pack for studio lighting 1.CE certificate Single socket 500w 2.Fit with Menik W series ... flash, they can use together with wireless controller and power pack. With exact and stable circuit design, fashionable ... hold it on a light stand.5.Size for 500w power pack is 195*130*120mm,weight is 3kg, ... full charging .It also can connect with power less than W-500W,WHICH FLASH TIME WILL BE LONGER.6. ...