Pocket PC communicator E-Ten P603 is the modificated version of popular telephone Pocket PC E-Ten P600. The construction of E-Ten P603 is notable now for more ergonomic large buttons "call receive" and "end of talk" (cancel), the navigation key became comfortable too. The telephone module by which is equipped the communicator E-Ten P603 can work in all three ranges GSM 900/1800/1900. The "heart" of the handset is the processor of the previous generation StrongARM (206 MHz), the phone has 64 Mb of operational system and 32 Mb of energy-dependent ROM, the model is controlled by the telephone version of OC Pocket PC Phone Edition.