MPF Products 3.7V 140mAh 84598-01 82742-01 CPP-547 Battery Replacement Compatible with Plantronics Savi WH500, W440, W440/M, W740, W740/M & W745 Wireless Headsets
Replacement 3.7V 140mAh 84598-01 82742-01 Battery for Plantronics Savi W440, Savi W440/M, Savi W740, Savi W740/M, Savi W745, Savi WH500 Wireless Headsets.