Three Halcyon 1200 mAH Lithium Ion Replacement Battery for Sony Cyber-shot DSC-W370 Digital Camera and Sony NP-BK1 Package Includes: 3 Halcyon Brand Battery Battery Specs: 1200 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-BK1 Batteries