eForCity Replacement Battery for iPod touch 4G Compatible With Apple,: iPod touch, 4th Generation Power-up your Apple, iPod touch, 4th Generation and keep the music playing with this reliable, rechargeable, replacement battery Keep the music playing on your 30GB iPod, Video with this replacement battery. Voltage: 3.7 V Accessory ONLY, MP3 not included. Apple, iPhone, iPad, iPod are registered trademarks of Apple, Inc. Apple does not endorse use of these products. Note: A technician is recommended for installation. Our company is not responsible for any damage caused by installation of this accessory