ALLOWS 15-20 HOURS OF ADDITIONAL PLAYING TIME! Extend the play time of your iPodŽ while on the go with the Maxell Back-up Battery Pack. This back-up battery pack is perfect for outdoor activities, the beach, long road trips or anytime you don't feel like being tied down to power cord. The device operates on 4 'AA' batteries and allows an extra 15-20 hours of playing time for your dockable iPod. The remaining battery life is displayed via an LED indicator so you know how much power is left. Use the included clip to secure your 15, 20 or 30 GB iPod to the battery pack. Features: Designed for "dockable" iPods Delivers an additional 15 to 20 hours of playing time Remaining battery life LED indicator Includes clip for 15, 20 or 30gb iPod Requires 4 'AA' batteries (not included) Dimensions: 4.5 x 4.2 x 3.3 inches Not compatible with iPod mini Includes Maxell 90 day warranty I ALSO TAKE PAYPAL