Flashpoint Battery Power Pack Unit for The XPLOR 600 Series Monolight (WB87) Flashpoint 1-Year Full USA Warranty Great energy reserve for the long-run At least 450 full power flashes Fits all XPLOR models Convenient LED readout of power levels Great energy reserve for the long-run At least 450 full power flashes Fits all XPLOR models Convenient LED readout of power levels Holds energy without memory loss Recharges in just 4 hours