{"id":189584,"date":"2026-09-21T13:21:47","date_gmt":"2026-09-21T05:21:47","guid":{"rendered":"https:\/\/estore.vertexhk.com\/product\/jbl-boombox-4-portable-waterproof-bluetooth-speaker-black-jblboombox4blkuk\/"},"modified":"2026-09-21T13:42:31","modified_gmt":"2026-09-21T05:42:31","slug":"jbl-boombox-4-portable-waterproof-bluetooth-speaker-black-jblboombox4blkuk","status":"publish","type":"product","link":"https:\/\/estore.vertexhk.com\/en\/product\/jbl-boombox-4-portable-waterproof-bluetooth-speaker-black-jblboombox4blkuk\/","title":{"rendered":"JBL Boombox 4 Portable Waterproof Bluetooth Speaker | Black (JBLBOOMBOX4BLKUK)"},"content":{"rendered":"

The Ultimate Outdoor Sound Experience \u2013 34-Hour Extreme Battery Life<\/h2>\n
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Key upgrades compared to the previous BOOMBOX 3 \u2757<\/div>\n
\u2705 Battery life boosted by 42% (24H \u2192 34H)
\n\u2705 Weight reduced by 13% (6.78kg \u2192 5.89kg)
\n\u2705 Added dual bass modes (previous model had only one tuning profile)
\n\u2705 Industry-first swappable battery design (unlimited outdoor playtime)
\n\u2705 Upgraded to 3 passive radiators (previous model had 2)<\/div>\n
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\u2b50JBL PRO SOUND: A Breakthrough in Acoustic Performance<\/h2>\n
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\u2022 Explosive 6-driver output: Dual 5-inch woofers, dual 0.75-inch tweeters, and three passive radiators deliver precise crossovers and powerful rhythm.<\/p>\n

\u2022 Dual-mode bass enhancement with one-touch switching:
\n\u2726 Deep Mode (Orange indicator): Full output from dual 5-inch woofers and three passive radiators; reaches down to an extreme 37Hz.
\n\u2726 Dynamic Mode (White indicator): Precise, punchy rhythm with enhanced mid-to-low frequency layering.<\/p>\n

\u2022 AI Sound Boost real-time audio optimization: Maintains low distortion even at maximum volume without sacrificing detail or nuance.<\/p>\n

\u2022 Lossless audio support via USB-C direct connection: Connect to a computer or player to decode high-resolution audio formats like FLAC and ALAC (requires compatible devices).<\/p>\n

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\u2b50Ultra-Durable Design<\/h2>\n

\u2022 IP68 Military-Grade Protection: Fully dustproof and capable of withstanding submersion in 1 meter of water for 30 minutes\u2014unfazed by beaches, heavy rain, or spills. <\/span><\/p>\n

\u2022 Lightweight Innovation: Despite an increase in volume compared to the previous generation, the net weight has been reduced to 5.89kg (a 13% reduction), making it easier to lift and carry.<\/span><\/p>\n

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\u2b50A Revolution in Battery Life and Expandability<\/h2>\n
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\u2022 34-Hour Extended Playtime: 28 hours base + 6 additional hours via Playtime Boost\u2014keep the party going all day and night.<\/p>\n

\u2022 Swappable Battery: Easily remove the 95.02Wh battery module (sold separately) in three simple steps for instant playback continuity.<\/p>\n

\u2022 Auracast\u2122 Sound Expansion: Wirelessly link two units for stereo sound or synchronize playback across multiple JBL speakers.<\/p>\n<\/div>\n

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Unrivaled JBL Pro Sound and AI Sound Boost<\/h2>\n
Experience earth-shaking sound with deep, powerful bass; the redesigned JBL Boombox 4 features two larger woofers, two tweeters, and three passive radiators.
\nWith AI Sound Boost, there\u2019s no need to lift a finger\u2014this smart technology analyzes your music in real-time and optimizes the audio, delivering higher output and reduced distortion even at maximum volume.<\/div>\n<\/div>\n<\/div>\n<\/div>\n
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Up to 34 hours of playtime<\/h2>\n
The party vibe never stops… get up to 28 hours of use on a single charge. Forgot to charge up for the next party? No problem. Whether it\u2019s burpees, locking, the moonwalk, or any of your hidden dance moves, JBL Playtime Boost adds up to 6 hours of extra playtime.<\/div>\n
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Waterproof and Dustproof<\/h2>\n
The JBL Boombox 4 features an IP68 waterproof and dustproof rating, so it can handle any weather\u2014or the challenges posed by our clumsiest friends.<\/div>\n
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Connect multiple speakers via Auracast\u2122<\/h2>\n
Why not share the vibe? With Auracast\u2122, you can easily stereo-pair two Boombox 4 speakers for a wider soundstage, or connect multiple Auracast\u2122-enabled JBL speakers to fill a larger area with the same playlist.<\/div>\n
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Dual bass boost settings to match the vibe<\/h2>\n
Fire up the JBL Boombox 4 and experience the classic, signature JBL bass we all love.
\nCraving deeper bass? Press the bass boost button on the top panel\u2014the JBL Horn logo glows orange, signaling that you\u2019ve entered Deep Bass mode, where both woofers and all three passive radiators kick into full action.
\nWant a tighter, punchier sound? Tap the button twice; the speaker icon turns white, indicating you\u2019ve switched to “Punchy Bass” mode. Whatever the mood, we\u2019ve got the right bass for it.<\/div>\n
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Bigger and louder, yet lighter<\/h2>\n
The JBL Boombox 4 delivers even more massive, outstanding sound\u2014but the real highlight is that we\u2019ve redesigned it to be lighter than ever. Now, it\u2019s easier than ever to take command of your music, wherever you go.<\/div>\n
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Lossless Audio Playback<\/h2>\n
Want to hear every detail? Connect your laptop or other audio device to the Boombox 4\u2019s USB-C port* to enjoy lossless audio playback. It is perfect for true audio enthusiasts who want to get more out of their music.
\nJust ensure your audio source provides lossless audio.
\n*Requires compatible lossless audio content from a supported app or service.<\/div>\n
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Recycled plastic and fabric, plus FSC-certified paper packaging<\/h2>\n

The JBL Boombox 4 features a speaker grille made from post-consumer recycled plastic and recycled fabric. It also comes in FSC-certified paper packaging printed with soy ink.<\/span><\/p>\n

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Replaceable Battery**<\/h2>\n
Want longer playtime for your speaker? Simply replace the rechargeable battery in three easy steps to restore the JBL Boombox 4 to a full charge.<\/div>\n
**Replaceable battery sold separately**<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>