The company said its F900iC uses a smart card to work with its FeliCa mobile wallet service. That service enables users to use the phone's near-field wireless technology to make credit card purchases and conduct other transactions.

For security, the smart card functions can be locked using either a password or fingerprint sensor, the company said in a statement. In addition, the smart card function can be locked remotely using other phones.

The phone also sports a built-in 1.28 megapixel camera and a 2.4-inch high-resolution color LCD. It also has a built-in miniSD memory card slot.

The device works with DoCoMo's 3G service, although the electronic wallet also requires a subscription to the company's consumer i-mode service.