Promate LumiSound Black is a portable Bluetooth speaker that delivers true wireless stereo with a 10W output and vibrant RGB lighting. It supports three playback methods: Bluetooth, AUX, USB drive, and TF card. MP3/MP4 formats are supported, with up to 64GB via TF/USB. The built-in lithium‑ion battery (18650) provides 2–3 hours of playback after a 3–4 hour charge. With a 10-meter Bluetooth range and a compact design, it’s suitable for home, travel, and gatherings
| Color | | Black | |
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| Bluetooth Version | | V5.3 | |
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| Input | | DC 5V/500mA | |
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| Speaker Output | | 10W | |
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| Frequency Range | | 120Hz-20kHz | |
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| Impedance | | 4Ω | |
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| Signal-to-Noise Ratio | | ≥80dB | |
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| Battery Type | | Lithium-ion 18650 | |
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| Battery Capacity | | 3.7V/2200mAh | |
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| Operating Distance | | 10m | |
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| TF Card / USB Flash Max Capacity | | 64GB | |
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| Music Format Supported | | MP3/MP4 | |
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| Total Charging Time | | 3-4 Hours | |
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| Total Playtime | | 2-3 Hours | |
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| RGB Modes | | 16 Modes | |
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| Connectivity | | Wireless BT, AUX Port, USB Drive, TF Card | |
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