DemerBox Portable Speaker
A powerful and durable portable Bluetooth speaker, the DemerBox may be your best bet. Its electronics are installed inside a waterproof Pelican case, so it’s tough as nails, cranks out powerful bass, and doubles as a carrying case for small items. It lasts up to 40 hours per charge and has a USB charging port inside.
When you buy through links on our site, we may earn an affiliate commission. As an Amazon Associate I earn from qualifying purchases.