G6R0 Features Superior Industrial DesignDesigned for Mobile UsersSpecificationsDimension(mm) : Extended: 256.6 x 161 x 71.7(without Antenna) ; 256.6 x 211 x 113.5 (with Antenna)Closed: 98.5 x 285 x 10 mm Connectivity Solution : IrDA Key Rows : 5 Key Pitch : Horizontal - 18 mmVertical - 16 mm Weight : 180 g Supporting OS Windows Mobile 2005Palm OS 5.0Windows Smartphone Key Height / Travel : 4.5 / 2.4 mm Switch Type : Scissors Structure Operation Temperature : 5~50