Two Halcyon 2200 mAH Lithium Ion Replacement Battery for Sony Alpha NEX-6 Mirrorless 16.1MP Digital Camera and Sony NP-FW50 Package Includes: 2 Halcyon Brand Battery Battery Specs: 2200 mAh with Premium Japanese Cells Halcyon Support: Includes 5 Year Halcyon Replacement Warranty. Full Membership Access to Halcyon Customer Support Website Frustration Free Packaging. No wasteful and dangerous plastic blister packs. Compatible with all cameras which take Sony NP-FW50 Batteries