... as FM radio separately, search and lock channels automatically. Wired Earphone It's perfect audio-chat tool, provides infinite enjoymentFM RadioThe ... audio cable ,the receiver can be used as a wired earphone.Wireless MonitoringPlace the emitter near baby, old people and sick ... , such as TV set, audio device, DVD/VCD player, multimedia PC, etc.Power Supply: 2 x AAA batteries or 4.5 ...