Review on 🔊 Zamkol 2021 Newest Bluetooth Speaker: Powerful 24W Wireless Speaker with Deep Bass, Loud Sound, and IPX6 Waterproofing - Perfect for Home and Outdoor Use by Nick Narvasa

Good sound at all volume levels. I turned the volume up to the maximum and even at this volume, the "whooping" noise is minimal. Playlist broadcast on my phone indoors, Bluetooth range is about 30 feet. Outdoors (line of sight) the distance is about 50 feet. I hung the speaker on the rails at the back of the house and the music got loud enough to play in the garden. The speaker charges fairly quickly via the micro USB port. I didn't confirm the battery life (full to "empty"), but after about half an hour of use, the battery went from 80% to 70%, so extrapolate from there. I like the handy rubber ring on one end to keep the speaker upright and the two rubber guides on one side to allow the speaker to be placed horizontally. The control buttons are clearly labeled and easy to use. You just have to remember when to press quickly (volume control) and when to press and hold for a few seconds (power on/off and skip to next/last track).