MPF Products Replacement 2200mAh NTA2479 Battery for Logitech Pure-Fi Anywhere 1st Generation 984-000006 & 984-000005 Portable Compact Speaker Dock for iPod Replacement for the Following Logitech Battery Model/Part Numbers: NTA2479. Compatible with the following models: Logitech Pure-Fi Anywhere 1st Generation (Black) 984-000006 & (White) 984-000005. 3.7V 2200mAh 8.14Wh Lithium-ion Rechargeable Battery Pack. 1 Year Replacement Warranty. MPF Products is a Registered Trademark.