1. 3D stereo sound: The speaker is designed to deliver a rich and immersive audio experience, with 3D stereo sound that creates a wider and more lifelike soundstage. This means you'll hear more detail in your music, and feel more immersed in movies or other audio content.

2. Support SD card: With the support of an SD card, you can easily play your music files directly from your SD card without needing to connect your phone or other device. This can be especially useful if you don't want to drain your phone battery or use up your data plan.

3. Pendrive can be inserted: The speaker also supports USB drives (pendrives), so you can play your music directly from a USB drive, making it easier to share your music with others.

4. FM radio function: The speaker includes an FM radio tuner, allowing you to listen to your favorite radio stations while on the go. This can be a handy feature if you're traveling or want to keep up with local news and events.

5. Support Bluetooth: Of course, the main feature of this Bluetooth speaker is its ability to connect wirelessly to your devices via Bluetooth. This means you can easily stream music, podcasts, or other audio content from your phone, tablet, or computer directly to the speaker, without needing to worry about cables or cords.