JBL Charge 5 - Portable Bluetooth Speaker with deep bass, IP67 waterproof and dustproof, 20 hours of playtime, built-in powerbank, in blue: Amazon.co.uk: Electronics & Photo
JBL's latest affordable Bluetooth speakers are waterproof and charge via USB-C - The Verge
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 Clip 2 | Waterproof Ultra-portable Bluetooth Speaker
JBL Charge 4 Portable Waterproof Wireless Bluetooth Speaker - Black : Amazon.co.uk: Pet Supplies
JBL Wind 3S Portable Waterproof Bluetooth Speaker (NEW BUT WITH A BROKEN CLIP) 50036389426 | eBay
JBL Charge 5 Waterproof Portable Bluetooth Speaker - Gift Idea | eBay