This speaker is IPX4 water-resistant, provides 2 hours of battery life with a quick-charging station (sold separately) or 2.4 amps of USB power, and 5 hours with 1 amp of USB power. A fully charged 4800 mAh lithium-ion battery can power the speaker for up to 5 hours (high) / 40 hours (low). The price drops from $74.99 to $25.68 w/ free shipping.

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