1. Compatible Toner Cartridge for C3903A/F 2. For use in HP LaserJet 5p/5MP/6p/6MP/6PSE; Canon Laser Beam Printer Toner 3. Color: Black 4. Specification: Mitsubish OPC Drum, Korea powder 5. Packing: Neutral / OEM package / Kingnote package 6. Page Yield: 3650 pages at 5% coverage 7. Guarantee: 1: 1 replacement, 1 year warranty.