12 Months Warranty Replacement for the Following Battery Model/Part Numbers: 616-0337, 616-0311 Compatible with the Following Models:Apple iPod Nano 3rd 4GB, iPod Nano 3rd 8GB, iPod Nano G3 4GB, iPod Nano G3 8GB Capacity:450mAh 3.7V Li-Polymer Rechargeable Battery Pack With Tools Kit. Cameron Sino Over 10 Years Battery Manufacturing Experience 1.All Batteries are CE certified. 2.Battery Specification Capacity:450mAh, Battery type:Li-Polymer Voltage: 3.7V Dimension: 44.58 x 42.40 x 2.97mm 3.Compatibility:AppleiPod Nano 3rd 4GB, iPod Nano 3rd 8GB, iPod Nano G3 4GB, iPod Nano G3 8GB 4.Part No.:616-0337, 616-0311