Schumann Signal 7.83Hz Low Frequency Pulse Generator Improves Sound Quality
Description
1. Battery powered, no voltage ripple, more accurate output frequency
2. Polymer lithium battery with overcharge/overdischarge/overcurrent protection
3. Small size, easy to use, good effect
4. Power supply: 5V Micro USB interface charging cable
5. Battery: lithium polymer battery, capacity 850mAh
6. Charging current: 250mA
7. Working current: 7mA
8. Charging time: about 6 hours fully charged
9. Use time: about 200 hours
10. Size: about 6.8x5.2x1.2cm
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