The Siemens S45 is the first GPRS device from Siemens. With an integrated antenna, it weighs 93 g (69 cm). Available in two colors - silver and blue - S45 has a wide graphical diaplay in amber with 7 lines of text. Its LiIon 850 mAh battery has 2 hours usage

It has a flexible memory, that makes it possible store 500 contacts or use it as a notepad. It is also compatible with Micorsoft Outlook, bundled with a a CD ROM for easy synchronization with a PC.

It has a built-in speakerphone for conference calls, voice dialling, voice memos, an interated fax and modem, infrared (IrDA); and software T9 in order to facilitate the writing of SMSs. There is also a currency covertser, a directory of telephone codes and various games. It also has a screensaver mode.