JBL Charge 4 - Portable Bluetooth Speaker with built-in powerbank
JBL Charge Essential Wireless Bluetooth Speaker - Portable Waterproof Speaker with Built-in Power Bank, USB Charging, Bluetooth Connect for Phone or Tablet up to 2 Devices, in Gun Metal Black : Amazon.co.uk:
JBL Charge 5 Portable Speaker with WiFi and Bluetooth, built-in battery, IP67 and USB Charge-out | very.co.uk