A wireless mobile training device has a microprocessor, a first switch, a microphone, and a speaker. The microprocessor generates a first control signal to induce the speaker to emit a first audible instruction requesting a training program identifier. The microphone generates a first input signal corresponding to a received audible training program identifier. The microprocessor generates a second control signal to induce the speaker to emit a second audible instruction associated with a predetermined training program name, if the received audible training program identifier corresponds to the predetermined training program identifier. The microprocessor determines a first time interval for completing a first user task associated with the second audible instruction based on second and third input signals from either the first switch or the microphone.