Pixel TD-384 is a battery power pack for Sony flashgun, HVL-F58AM HVL-F56AM, with extremely extremely stable fast recycle time 1.72s. * Using two groups of symmetrical charge system, it"s more stable charging voltage and faster recycles time. * Flexible and convenience to use choose charging with one or two group freely, holds 8 AA batteries. Stand-by power consumption is more save and recycle power compare with similar product. * The flashgun power pack has built-in thermal protection switch, when the frequent use lead to thermal. Protection of power pack, it stops working. However, the battery pack will continue work after cooling. * Package includes Flashgun power pack: x1, Protection bag: x 1, Camera connecting screw: x 1pc & Instruction manual: x 1