The story of this device
JBL Charge 4 combined a rugged IPX7 waterproof body with a custom proprietary driver and dual bass radiators. Its massive 7,500mAh battery powered up to 20 hours of music while charging mobile phones via USB.
JBL
JBL · Audio & MP3 players · Released in 2018 · JBLCHARGE4
Fourth-gen Charge with a new single-driver layout, 7,500mAh battery
Open this device in the web appJBL Charge 4 combined a rugged IPX7 waterproof body with a custom proprietary driver and dual bass radiators. Its massive 7,500mAh battery powered up to 20 hours of music while charging mobile phones via USB.