The device operated on tiny power cells and had a built-in antenna. Its transmitter would relay data from the device by means of coded pulses.

该装置依靠微型电池驱动，设有内置天线，它的发射器可以利用各种编码脉冲进行数据中转。

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Alcatel, however, will use a small radio transmitter concealed in the battery cover of the phone to transmit a coded low-power signal to the belt clip to tell it when to vibrate, a company spokesperson said after the press conference.

CNN: Technology - Alcatel personalizes vibrating phone alerts