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Thanks for your inquiry. The USB-C port on our JBL Boombox 4 serves two main purposes: it allows for lossless audio playback and acts as a power bank to charge your other devices. Please note that you cannot recharge the Boombox 4 itself through the USB-C port; it must be plugged into a wall outlet using the standard AC power cord. If you need further assistance, please contact our customer support directly.
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