Compatible toner cartridge 1. 3900A Toner Cartridge 2.Punctual deliverying 3.Warrantly is 24 months 4.5% coverage toner cartridge for HP 3900A1.Color:Black2.Packing:Neutral packing or customized ... brand is the best selection for the series for toner cartridge a wide range of brand,names such as:HP,Canon,Samsung,Brother,Xerox,etc ...