JBL Charge 4 – Waterproof Portable Bluetooth Speaker – Black

Amazon.com Price: $149.95 (as of 19/09/2021 02:22 PST- Details)

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Wirelessly connect up to 2 smartphones or tablets to the speaker and take turns enjoying powerful sound.
Battery type Lithium ion Polymer 27Wh (Equivalent to 3.6Volt, 7500mAh). Battery charge time 4 hours (5V/2.3A). Music playtime up to 20 hours (varies by volume level and audio content)