JBL Go 4 Bluetooth Speaker
Ultra-portable waterproof Bluetooth speaker with 7hr battery. Punches way above its weight.
Check Price on Amazon 📋 How we test →Our Review
The JBL Go 4 has no business sounding this good at $30. It's roughly the size of a deck of cards, weighs under half a pound, and produces surprisingly full, clear sound with noticeable bass. IP67 waterproof and dustproof means it goes everywhere — shower, pool, beach, hiking. Seven hours of battery is enough for a full day out. Bluetooth 5.3 connectivity is rock-solid up to 30 feet. The integrated loop clips onto bags and belt loops. We've been carrying one daily for two months and it's become the product we recommend most often to friends.
Sound Quality for Its Size
The JBL Go 4 punches well above its weight class. The single 40mm driver produces surprising bass response for a speaker that fits in a shirt pocket — JBL's acoustic tuning avoids the tinny, hollow sound that plagues most budget micro-speakers. At 70% volume, it fills a small room or patio comfortably. At full volume, distortion creeps in, but at conversational distances the clarity holds up well. Mids are warm, highs are present without harshness, and the bass port prevents the boxiness common in this size class.
For context: the Go 4 doesn't compete with the JBL Flip 7 or Charge 6 in raw power. It's purpose-built for portability-first use cases — a travel bag, a bathroom shelf, outdoor lunches. If you need to fill a large patio or backyard, you need to step up. But for personal use within 8-10 feet, this is genuinely excellent.
IP67 & Build Quality
IP67 waterproofing means it's submersible up to 1 meter for 30 minutes — shower-proof, pool-splash-proof, and rain-proof with significant margin. The rubberized housing feels premium for the price point, and the integrated carabiner clip makes it genuinely useful for backpack attachment. Battery life hits 5 hours at moderate volume with a USB-C charging port (no more proprietary connectors). Bluetooth 5.3 provides a stable connection up to about 33 feet.
Who It's For
✓ Great For
Travelers wanting a tiny capable speaker, shower and outdoor use, a gift for anyone who needs portable audio on a budget.
✗ Not Ideal For
Group outdoor gatherings needing volume, audiophiles, anyone wanting stereo sound or multi-speaker pairing.
What We Like
What We Don't
Selecto Verdict
The JBL Go 4 Bluetooth Speaker earns its 4.6/5 rating. Unbelievable sound for the price stands out as the biggest strength. At $29.95, it delivers genuine value in its category.