JBL Charge 4 review: Worth the money, kind of - SoundGuys
JBL Charge 2 review: A long-lasting Bluetooth speaker that can juice up your gadgets, too - CNET
The Best Bluetooth Speakers 2015: JBL Charge 2+, Bose Soundlink Mini II and UE Roll/Megaboom - 9to5Mac
JBL Charge 4 Portable Bluetooth Speaker, Black - Walmart.com
Amazon.com: JBL Charge 5 - Portable Bluetooth Speaker with Exclusives Hardshell Travel Case with IP67 Waterproof and USB Charge Out (Black), Charge 5 with Case : Electronics
Product review: JBL Charge 2+ Bluetooth Speaker - Richer Sounds Blog | Richer Sounds Blog