Go-Dap GD-03(Black) for iPhone3GS　Made in Japan
GO-DAP GD-03 is an integrated portable headphone amp and battery for your iPhone3G/3GS.Made in Japan.You can listen to the music through the amp on Go-Dap while charging your iPhone.Mid to high sound range specUp to twice as much operating timeCharge and synchronize your iPhone3 on the cradle