A portable speaker is perfect for your trip and that's what you get with this Bluetooth speaker from LG. This model uses Bluetooth for easy pairing with other devices.
From Amazon
LG XBOOM Go XG7QBK – Wireless Bluetooth Speaker, 40W, Sound Boost, IP67 Waterproof, 24H Battery Lifetime, Variable LED Lights Colour, Wide Connectivity, Anthracite
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lg electronics xboom go mono bluetooth speaker black xg7qbk - ad01