Panasonic launched their new compact flasgun the DMW-FL220 at Photokina couple weeks ago. This new flash gun will provide an Auto White Balance performance for your Digital camera specially Panasonic DMC-LX3 after updated the firmware of course. Panasonic DMW-FL220 flash is powered by 2 cell AA Alkaline battery and measures about 61 x 98 x 46 mm. I could find the fix information about the price but you can directly find out in their official store.