With a growing number of radio manufacturers in the world, TECSUN is still energetically committed to developing many famous machines such as S-2000 and PL-680. - This TECSUN is the long-awaited high-end model. 5 large knobs and stereo speakers placed on the left and right sides for an inviting look. And there are many features that are packed into TECSUN are not date. - In addition to the regular tuning knob, it also comes with a luxurious dedicated knob for fine tuning. Tuning is very comfortable. It is also equipped with an SSB and synchronous detection, which is a must-have for high-end radios. Both are available for LSB and USB. Not only is it compatible with external antennas, it also comes with FM terminals and AM terminals. - Now you can play music files on your TF card with new music player mode. In addition, it is also compatible with high-resolution audio sources such as FLAC and WAV, and you can enjoy high quality music with the high-quality stereo speaker. Use the USB cable to connect it to your computer and use it as an external speaker on your computer. In addition, it is also equipped with a LINE IN/OUT terminal, which allows input and output between an external audio device. - When you listen to your radio on AC power at home, there was a problem that it is easy to make noise from the power source. In order to solve this problem with H501, we adopted 18650 rechargeable battery. The large capacity 18650 battery is also used for electric vehicles and other vehicles, so it can be used for a long period of time without noise. Furthermore, the radio has a revolutionary dedicated battery space for charging and allows you to charge another battery while using the radio with batteries. Since it is USB charging, you can charge it anytime, anywhere, anytime, anywhere, in a variety of ways, such as your USB charger or mobile battery. -