New Arrival Xtar Wk41 Edc Light-sirius Aa Flashlight(Shipments from USA) The XTAR WK41 is a multi-functional EDC flashlight released in May, 2013. Using the high-output CREE XM-L U2 LED, the WK41 could provide high brightness. The WK41 is not only compatible with AA batteries and 14500 lithium batteries also able to recognize which type of battery is being used. The compact size and unique mode arrangement make the WK41 your best choice for an EDC flashlight.