Brand UltraFire. Model WF-501B Emitter Brand/Type MC-E Emitter BIN M Color BIN White Total Emitters 1. Battery Configurations 1 x 18650 rechargeable battery UltraFire WF-501B 450lm 5-Mode White Flashlight w/ CREE XM-L U2, Bicycle Mount (1 x 18650) : Amazon.in: Electronics.Ultrafire WF-501B and Xnova LED flashlights. Review date: 13 October 2007. Last modified 03-Dec-2011. When LED flashlights with better than penlight Buy UltraFire WF-501B 5-Modes 1000LM LED Flashlight Electric Torch at Walmart.com. Please install goods with the instruction manual.