The JBL Flip 4 waterproof wireless speaker is a great deal at $60 (Update: Expired) - CNET

JBL Flip 6 Review: One Powerful Little Bluetooth Speaker - CNET

Introducing the JBL Charge 4 portable Bluetooth speaker with full-spectrum, powerful sound and a built-in power bank to charge your devices. It features a proprietary developed driver and two JBL bass radiators that intensify sound with strong deep bass. Its high-capacity 7500mAh rechargeable Li-ion battery provides up to 20 hours of playtime. The speaker carries a convenient USB charge out to quickly charge your devices, such as your smartphone, so you will never run out of power again.

JBL Flip 4 Waterproof Portable Bluetooth Speaker (Black) (Renewed)

JBL Flip 4 Waterproof Portable Bluetooth Speaker