With FM radio function, can listen to every frequency broadcast program. High quality wireless headphones receiver and transmitter set for listening to music without wires constantly getting in the way. This set features a headphone for eggshell design with super loud 1.5W output, volume control, a bendable design for fitting almost anyone. Insert the wireless transmitter to PSP-2000 console earphone hole. You can listen to the PSP-2000 console from 8 to 10 meters according to search the headphone. Thus, avoid affecting the others' work and study. FM radio transmitter receiver powered by 1 piece of CR2032 button cell. Wireless headphones powered by 2 AAA batteries (not included) Size of the FM transmitter: 7.1 x 2.4 x 1.3cm (L*W*D) Color: Black