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RE: Renogy E.TUNES - A Solar Bluetooth Speaker
pros:
- excellent sound quality
- it has noise eliminating system
- very light and compact
- wide audio frequency band (80 to 18 kHz
cons:
- 5000 mAh battery is quite not enough for a combined speaker and a power bank.
- too small solar panel for a 5000 mAh battery, and manufacturer did not give information for charging time
- can't say if it is expensive or cheap