At a Glance#
Product : JBL Go 4
Brand : JBL
Best For : On-the-go listeners who want waterproof, pocket-sized sound without compromising on audio quality
Connectivity : Bluetooth 5.3
Buy Now : View on Amazon
Key Highlights:
- IP67 waterproof and dustproof for pools, showers, and beach trips
- Ultra-compact at 190g with an integrated carrying loop for easy attachment
- JBL Pro Sound with a 45mm driver for clear vocals and punchy bass
- Bluetooth 5.3 with Auracast, using the standard A2DP and AVRCP profiles
- Auracast support connects multiple speakers for bigger, room-filling sound
Who Should Buy This#
The JBL Go 4 occupies the sweet spot between phone speakers that sound flat and larger speakers that won't fit in your pocket. It delivers JBL's signature Pro Sound in a package smaller than a deck of cards, with waterproofing that lets you take it literally anywhere. Competing pocket speakers at this price lack the IP67 rating, Bluetooth 5.3, or the brand's audio heritage.
Perfect for:
- Travelers and commuters who want a speaker that disappears into a bag pocket and survives airport TSA and rainy walks
- Shower and pool users who need IP67 waterproofing to play music safely around water every day
- Outdoor adventurers who want a lightweight speaker for hiking, camping, or picnics without worrying about drops and dust
- Desk workers who want background music and better playback audio than a laptop, without a bulky desktop speaker
Design & Build Quality#
The JBL Go 4 sports a compact rectangular shape wrapped in durable fabric with bold JBL branding and accent colors. At 3.71 x 2.98 x 1.66 inches and just 190 grams, it genuinely fits in a jacket pocket or the palm of your hand. The build feels solid despite the featherweight body, and the fabric exterior resists everyday scuffs and scratches.
The redesigned integrated carrying loop sits on the top corner, making it easy to clip onto a bag strap, carabiner, or lanyard. Buttons for power and Bluetooth pairing sit on the side panel, with playback and volume on the top edge, and both are tactile and easy to locate by feel. A USB-C port on the same side handles charging. JBL also builds the Go 4 in part with recycled materials: post-consumer recycled plastic and recycled fabric for the speaker grille, in FSC-certified packaging printed with soy ink.
Key Features#
JBL Pro Sound with Punchy Bass#
The Go 4 packs a 45mm driver with 4.2 watts of output power. For a speaker this small, the audio quality is genuinely impressive. Vocals are clear and detailed and mids are present without muddiness. It won't shake a room, but it fills a kitchen, bathroom, or campsite with surprisingly rich sound that leaves phone speakers in the dust.
The frequency response stretches from 90Hz to 20kHz, covering the full vocal range and most musical instruments with clarity. That 90Hz floor is the honest limit of a 45mm driver in a palm-sized box: sub-bass is simply not there, and what JBL calls punchy bass lives in the upper bass instead. Crank it up and the Go 4 stays composed without the distortion that plagues cheaper pocket speakers.
IP67 Waterproof and Dustproof Protection#
IP67 means the Go 4 is completely sealed against dust and can survive submersion in up to 1 meter of water for 30 minutes. Take it in the shower, set it poolside, or bring it to the beach without a second thought. Sand, rain, splashes, and accidental drops into water are all shrugged off.
IP67 is one step below the IP68 rating current flagship phones carry, and the difference is depth and duration rather than dust, but it still gives you freedom to use the Go 4 in environments where most electronics would fail. No protective case or waterproof bag needed.
Bluetooth 5.3 and Auracast Multi-Speaker Pairing#
Bluetooth 5.3 delivers a stable, energy-efficient wireless connection with improved range over older versions. Pairing is instant and the connection holds steady through walls. Do not expect a low-latency mode, though: JBL lists only the standard A2DP and AVRCP profiles, so lip-sync on video is whatever your phone negotiates.
The Go 4 also supports Auracast, a newer Bluetooth broadcast technology that lets you pair multiple compatible speakers together. Connect two Go 4 units for true wireless stereo, or link even more for a multi-room or party setup. The JBL Portable app provides EQ customization so you can tune the sound profile to your preference.
7-Hour Battery with USB-C Charging#
The built-in 3.23Wh lithium-polymer battery delivers up to 7 hours of continuous playback on a single charge, and tapping Playtime Boost adds up to 2 more. A full recharge takes about 3 hours at 5V 1A via the USB-C port, using any standard USB-C cable you already own. For a speaker this compact, 7 to 9 hours is more than enough for a full day at the beach, a weekend camping trip, or a week of desk-side listening at moderate volumes.
Technical Specifications#
Output Power : 4.2 Watts RMS
Driver Size : 45mm
Frequency Response : 90Hz - 20kHz
Bluetooth Version : 5.3
Bluetooth Profiles : A2DP 1.4, AVRCP 1.6 (no hands-free profile, no advanced codec listed)
Battery : Li-ion polymer, 3.23Wh (3.8V / 850mAh)
Battery Life : Up to 7 hours, plus up to 2 more with Playtime Boost
Charging : USB-C, approximately 3 hours to full at 5V 1A
Signal-to-Noise Ratio : Greater than 85dB
Waterproof Rating : IP67 (dustproof + submersible to 1m for 30 minutes)
Dimensions : 3.71" x 2.98" x 1.66" (94.3 x 75.7 x 42.2 mm)
Weight : 6.7 ounces (190g)
Maximum Operating Temperature : 45C
App Support : JBL Portable app with EQ customization
Pros & Cons#
Pros:
- IP67 waterproof and dustproof handles pools, showers, rain, and sand
- Ultra-portable at just 190g, fits in any pocket or clips to a bag
- JBL Pro Sound delivers clear audio with punchy bass from a 45mm driver
- Bluetooth 5.3 provides stable, efficient wireless streaming
- USB-C charging uses cables you already own
- Auracast multi-speaker pairing for stereo or party setups
- Made with recycled materials for a smaller environmental footprint
Cons:
- No auxiliary input for wired audio connections
- JBL lists no advanced codec support, so expect standard SBC quality
- No microphone, so it plays audio only and cannot take calls
- 7 hours of playtime trails the JBL Clip 4, even with Playtime Boost switched on
- Mono output limits stereo imaging for critical listening
Final Verdict#
Buy it. The JBL Go 4 delivers IP67 waterproofing, JBL Pro Sound, and a full day of playtime in a speaker that weighs less than a smartphone, making it the best pocket speaker you can buy at this price.
Our recommendation: Pick one up as your daily carry speaker, and grab a second for true wireless stereo pairing. At this price, two Go 4 units cost less than a single mid-range portable speaker. View on Amazon