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| Certification | ce | Power Source | Battery, AC, DC |
| Support Apt-x | No | Support APP | No |
| Battery | Yes | Number of Loudspeaker Enclosure | 1 |
| Audio Crossover | Full-Range | Material | Plastic |
| Waterproof | No | Communication | AUX, Bluetooth, USB, Audio Line |
| PMPO | 30W | Support Memory Card | Yes |
| Speaker Type | Portable | Remote Control | No |
| Cabinet Material | Plastic | Frequency Range | 80Hz-20KHz |
| Display Screen | Yes | Intelligent Personal Assistant | None |
| Voice Control | No | Built-in Microphone | No |
| Brand Name | Shidu | Model Number | SD-S28 (Wireless) |
| Type | Active | Use | COMPUTER, HOME THEATRE, Karaoke Player, Portable Audio Player, Mobile Phone |
| Channels | 3 (2.1) | Special Feature | MINI, Portable, Wireless |
| Place of Origin | Guangdong, China | Product name | Portable Wireless Speaker |
| Output power | 25w | Charging Voltage | DC 5V 1A |
| Lithium battery | 7.4V/2000mAh | Working time | 10~12 hours (MIC mode) |
| Charging time | 3-5 hours | Product size | 123*99*48mm |
| Unit weight | 298g | Frequency response | 90Hz~18KHz |
| Wireless distance | 30-35m |
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