1. Model Number: Canon 520BK/521BK/521C/8521M/521Y CISS

2. Compatible for: Canon IP3600/ IP4600/ MP540/ 620/ 630/ 980

3. Certification: ISO 9001:2000 and ISO 1400:2004.

4. Warranty: 2 years.

5. Color: C, K, M, Y.