JBL Go 4 Ultra-Portable Bluetooth Speaker - Big Sound, Small Size

In this review the JBL Go 4 is evaluated as a pocket-sized Bluetooth speaker for people who want louder, punchier sound without hauling bulky gear. The bottom line: it suits commuters, daytrippers, and casual outdoor users who prioritize portability and clear JBL Pro Sound over extended all-day battery life. Its IP67 waterproof and dustproof rating and compact loop make it easy to bring on trips, while the built-in battery and Playtime Boost offer flexible listening time. For anyone seeking a small, rugged speaker with surprising bass, the Go 4 is worth a close look.

Key Features

• Ultra-portable JBL Pro Sound: Delivers clear, loud audio and noticeably punchy bass for such a compact speaker, making music sound bigger than its size suggests.
• Up to 7 hours playtime: Provides a full day trip of listening on a single charge, with a Playtime Boost option that adds roughly 2 more hours when needed.
• IP67 waterproof and dustproof: Fully sealed construction means the speaker handles poolside, beach, or dusty trails without worry.
• Multi-speaker Auracast connection: Lets you pair two Go 4 units for true stereo or connect multiple Auracast-capable speakers for expanded sound at gatherings.
• Made with recycled materials: Uses post-consumer recycled plastic and recycled fabric on the grille, and ships in FSC-certified paper packaging.

Who It's For

The JBL Go 4 is ideal for commuters, cyclists, hikers, and students who want a highly portable speaker that still produces impressive volume and bass for its size. Its integrated loop and rugged IP67 rating make it a good match for pool parties, beach trips, and casual outdoor use where splashes and dust are a concern.

It is less suitable for listeners who need marathon battery life for multi-day use without charging or those who require powerful, room-filling sound for large parties - in those cases, larger portable speakers or a powered PA will be a better fit.

Pros & Cons

Pros

• Compact, travel-friendly design that fits in a pocket or clip loop for easy carrying.
• Impressively loud output and punchy low end relative to its small footprint.
• Durable IP67 protection for worry-free outdoor use around water and dust.
• Ability to pair with another Go 4 or multiple Auracast-enabled speakers for wider sound.

Cons

• Battery life receives mixed feedback; real-world run time can vary and may fall short of expectations for heavy users.
• Small size limits maximum loudness and low-frequency depth compared with larger portable speakers.

Specifications

Brand	JBL
Model	Go 4
Battery life	Up to 7 hours (Playtime Boost adds about 2 hours)
Durability	IP67 waterproof and dustproof
Connectivity	Bluetooth with Auracast multi-speaker support
Materials	Includes post-consumer recycled plastic and recycled fabric grille

Our Verdict

The JBL Go 4 is a strong value for anyone who needs a truly portable speaker with better-than-expected JBL Pro Sound and rugged waterproofing. It delivers convenient features like Auracast pairing and a handy loop, and while battery life can vary, the overall package is compelling for outdoor users and daily commuters who want quality sound from a palm-sized speaker.

Frequently Asked Questions

Is the Go 4 waterproof?
Yes, it has an IP67 rating, so it is both waterproof and dustproof for use around water and sand.

How long does the battery last?
The speaker provides up to 7 hours on a single charge with an additional Playtime Boost option that can add around 2 hours.

Can you connect two speakers for stereo?
Yes, you can pair two Go 4 units for stereo sound or connect multiple Auracast-enabled speakers for bigger sound.