Make sure your Archos 704 or 705 Wi-Fi portable media player is always at the ready with this extra battery. Like the battery that comes with the 704 and 705 players, this rechargeable Lithium-Ion battery provides up to 25 hours of continuous music playback and up to 5.5 hours of video played through the player's LCD screen. (You'll get longer battery-powered video playback when the 704 or 705 is connected to an external monitor, and the unit's LCD screen is off.) This battery also comes with a handy protective cover.