amsahr Replacement Battery for Toshiba 3431U, M60, M60-132, M60-134, M60-135, M60-139, M60-161, M60-167, M60-169, M60-182, M60-183, M60-184 (8 Cell, 4400 mAh) - Includes Mini Optical Mouse Includes Mini Optical Mouse with Retractable USB cord and ONE Compatible Laptop Battery 18 Months Manufacturer Warranty, 100% Compatible Non-OEM : Lithium Ion (Li- ion) Long Life Battery: Rechargeable with No Memory Effect and Power Surge Protection. 4400 mAh, 14.8 Volts & 8 Cell Protective Retail Packaging, Each Product is Sealed with Anti-Static Shield Sleeve. Exclusive Offering of High Performance, Long Lasting, and Durable Grade A Cell Battery