The JBL Go 4 is an ultra-compact, ultra-portable Bluetooth speaker that punches well above its weight class. It delivers JBL Pro Sound with punchy bass in a pocketable 3.7" × 3" × 1.7" form factor weighing just 0.42 lbs—making it genuinely grab-and-go.

Battery & Charging: Up to 7 hours of playtime per charge, plus a Playtime Boost mode that adds 2 additional hours (total 9). Charges via USB-C.

Water & Dust Protection: IP67 rated—fully waterproof and dustproof, surviving submersion in up to 3 feet of water for 30 minutes. Proven for poolside, beach, and outdoor use.

Connectivity: Bluetooth 5.3 with a typical 30-foot wireless range. Supports Auracast multi-speaker pairing—pair two Go 4s for stereo sound or connect to multiple Auracast-enabled JBL speakers for larger parties.

Build & Materials: Compact rubberized shell with recycled plastic grille and FSC-certified paper packaging. Lightweight and durable for everyday carry.

Sound Signature: Punchy, bass-forward tuning; excellent for music on the move. Not reference-neutral, but engaging and fun. Limited high-end extension due to small driver, typical of its class.

Who It's For: Mobile users, outdoor enthusiasts, travelers, and anyone prioritizing portability and ruggedness over raw loudness or studio detail. Priced at $49.95 (MSRP), it represents strong value in the ultra-portable segment.