JBL Flip 4, Black - Waterproof, Portable & Durable Bluetooth Speaker - Up to 12 Hours of Wireless Streaming - Includes Noise-Cancelling Speakerphone, Voice Assistant & JBL Connect+ : Electronics
JBL Flip 4 User Manual [Bluetooth Speaker] - Manuals+
How to Set Up a JBL Flip 4 Wireless Speaker - Support.com TechSolutions
JBL Flip 4 Won't Connect Through Bluetooth - iFixit