Enjoy the music like the good ole days with a vintage retro speaker. Bluetooth technology wirelessly streams audio. Built-in AM/FM SW 3-band radio. Listen to other music files via USB SD and Micro SD inputs. Telescopic antenna. Analog volume control. Built-in speaker with 2 x 3W output power. FM Frequency: 87 - 108MHz. AM Frequency: 520 - 1620KHz. SW Frequency: 5.9 - 18MHz. Uses both AC/DC operation. Rechargeable battery provides up to 2 hours of audio. Dimensions: 10.83" x 5.11" x 7.28".