Updated the 'Also think about' section with info about the latest products and solutions we've reviewed, and why they didn't make it into this list. An optional spare battery extends its about 12-hour play time. The IPX4-rated speaker has jacks to get a guitar and microphone, so it’s good https://www.bluetoothspeaker.top/rechargeable-battery-support-oem-odm-with-bt-tf-usb-function-bluetooth-speaker/