Punchy bass and clear audio that genuinely surprises given the size. This is the one area where the Go 4 delivers without question.
A step above IPX7 — fully sealed against dust as well as water. Poolside, beach, rain — it handles all of it.
Pair two Go 4s for stereo, or connect multiple Auracast-enabled speakers wirelessly. Works flawlessly when it works.
Post-consumer recycled plastic and fabric grille, FSC-certified packaging. A genuine sustainability effort from JBL.
Tap Playtime Boost to squeeze up to 2 extra hours from the battery — at the cost of reduced volume and bass.
Available in a wide range of colors and designs including camo. One of the better-looking ultra-portable speakers available.
Because there is genuinely a lot good about the JBL Go 4. The sound quality is excellent for the size — punchy bass, clear mids, and a volume ceiling that surprises you every time. The IP67 rating is the best waterproofing you'll find on an ultra-portable speaker, covering dust as well as water. The build feels premium, the design is one of the nicest in this category, and the Auracast speaker pairing is a clever feature that actually works. If this review was just about the audio and build, it would be a 9/10.
Premium retail packaging — JBL always gets presentation right.
Multiple reviewers — including one who owns Bose, Sony, Polk, Yamaha, and B&O speakers — say the Go 4 holds its own against far more expensive competition at moderate volumes. For its size, the bass depth and overall clarity are genuinely impressive. This part of the product is not in dispute.
Compact and well-presented in the box — it looks and feels like a premium product.
Multiple independent reviewers tested the battery at around 60% volume and measured under 4 hours — not the advertised 7. One reviewer exchanged the unit and the replacement measured almost identically. Others report the speaker randomly shutting itself off even when charged, and auto-powering down after just 10 minutes of audio pause. For a portable speaker, battery reliability is the single most important spec. The Go 4 fails it.
Ultra-compact size — genuinely pocketable. The hardware is great. The battery behaviour is the issue.
This is a separate issue from raw battery life and it's arguably more frustrating for daily use. The Go 4 powers itself down after roughly 10 minutes of silence — meaning if you pause your music to watch something else, you come back to a dead speaker that needs to be manually restarted and re-paired. The feature exists to save battery, which is understandable, but 10 minutes is too aggressive for real-world use. There's no way to adjust or disable this in settings.
Beautiful up close — the grille design and build quality are genuinely premium.
Side profile — clean, minimal, with a carabiner hole for clipping to a bag.
If you're looking for the best-sounding ultra-portable speaker and you'll always be within reach of a charger — or you only need it for short bursts — the Go 4 is genuinely impressive. If you want a speaker for an all-day camping trip, a beach day, or a long commute where you can't babysit the charge level, the battery situation makes it a risky choice at this price point. The Soundcore 2 costs less, lasts 24 hours, and is equally waterproof. That's a hard comparison for the Go 4 to win on paper.
If battery life matters to you — and for a portable speaker it should — the Anker Soundcore 2 is $29.98, lasts 24 hours, is IPX7 waterproof, and scored 9.5/10 in our review. The Go 4 sounds marginally better at the top end, but the Soundcore 2 is the more reliable everyday speaker at a lower price.
| Brand | JBL |
| Waterproof Rating | IP67 (waterproof + dustproof) |
| Advertised Battery | Up to 7 hours (+ 2hrs Playtime Boost) |
| Real-World Battery | ~4 hours at 60% volume (per multiple reviewers) |
| Multi-Speaker | Auracast — stereo pair or multi-speaker connection |
| Bluetooth | Bluetooth 5.3 |
| Sustainability | Post-consumer recycled plastic & fabric, FSC-certified packaging |
| Auto-Shutoff | ~10 minutes of silence (not adjustable) |
| Amazon Ratings | 4.7 / 5 (18,079 ratings) |
| Amazon's Choice | Yes |
IP67 · Auracast Multi-Speaker · JBL Pro Sound · Recycled Materials
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