TR635: Compared with ordinary radios that can only rely on built-in antennas to receive signals, this AM FM radio adds a 3.5mm external antenna interface. You can use an external antenna to enhance the AM signal, allowing you to listen to clearer radio stations; the built-in DSP chip displays the frequency in numbers, so both the elderly and children can clearly see the dial and simply adjust the frequency; the ATS function can automatically search nearby All radio stations make your operation easier; additionally add time function, you can adjust the 12/24 hour mode; powered by AC power cord (included), you can also use 3D battery power when outdoors; high and low bass mode can bring you A unique music experience, whether it's high notes at a party or low notes when you're alone, the clear sound quality meets your needs; Retekess TR621: Cassette Player, Built-in cassette tape deck with recording function. Top-loading CD, Compatible with CD/CDR/CDRW/MP3/WMA. , AM 530-1600KHz and FM 76-108MHz, which lets you choose from a wide variety of radio, talk and music programming. 3.5mm earphone jack. High-power dual speakers, Dual high-performance drivers and a power bass, which gives your music that extra kick you desire. Equipped with a remote control. You can remotely operate the boombox radio without getting close. Specification: Power Source: AC 110 V~, 60Hz / 6xA Batteries, Tape Speed: 4.76CM/S士3%, Impedance of Speakers: 77MM, 6ohm. Item Dimensions: 10.2x8.6x5.5in, Weight: body 2kg, Package: 1xTR621 Body (without Battery), 1xAC Power Cord, 1x Remote Control (with button Battery),1xEnglish User Manual