DESC: Experience the comfort of the Mad Catz Rechargeable Battery Grips. The ergonomic shape provides a better grip for added comfort and extended game play. And with the rechargeable battery, you can play your favorite game for up to 12 hours of continuous game play. Never again buy those expensive batteries for your Game Boy Advance.Features:Car Adapter & Rechargeable Battery Pack Power from a Car Power Plug or Cigarette Lighter 10-Foot Extension Cord Aloows Easy Back Seat Gaming Up to 12 Hours of Play Time per Charge Plug in and Play WHile Charging