Watts? (How can a speaker listing not indicate the wattage...)
This looks like a 10-20W speaker, yet 20 watt waterproof Bluetooth tube speakers start around $40.
Is the volume control an actual hardware volume control? Many of the Bluetooth speakers I've purchased the volume only change the BT-connected device volume; when connected via AUX does nothing at all.
Nice to see an Aux-out, as that's rare on most portable speakers. Although "6 Memory Slots" seems like overkill by about 5, and odd to not include a picture of said memory slots.