This is a generic, equivalent one, 100% compatible. This 3.7V 230mAh Replacement Li-ion battery is designed to compatible with Apple iPod Nano 4th Gen Nano 4GB 8GB 16GB 616-0405.

Specifications:
* Product Type: generic/equivalent
* Battery Voltage: 3.7V
* Battery Capacity: 230mAh
* Chemistry: Li-ion
* Condition: new, 1 Year Warranty!
* no memory effect so that you can charge battery at anytime.
* Integrated microchip prevents overcharging & lengthens battery life.

Compatible Part Numbers:
616-0405, 616-0407, P11G73-01-S01

Compatible Model:
For Apple iPod Nano (4th Generation) Series: Nano 4GB, Nano 8GB, Nano 16GB

Package Included:
1 x 3.7V 230mAh Replacement Battery for Apple iPod Nano 4th Gen Nano 4GB 8GB 16GB 616-0405