SCOTT MPA 20 Lovas. Frequency response: 20 - 20000 Hz, Audio formats supported: MP3. Media types supported: CD-R/RW, MP3-CD, audio CD. Display: LCD. Headphone connectivity: 3.5 mm. Battery type: R6 / UM3 / AA, Power requirements: 4.5V DC, Battery voltage: 1.5 V