Experience unparalleled audio with the JBL Boombox 4, a portable, waterproof speaker engineered for massive JBL Pro Sound. Equipped with two 5-inch woofers, two 0.75-inch tweeters, and three passive radiators, it delivers deep, resonant bass and crystal-clear highs. The AI Sound Boost technology dynamically analyzes audio in real-time, optimizing output for distortion-free sound even at maximum volume, with up to 130W RMS (AC power) or 100W RMS (battery).

Customize your listening with two Bass Boost modes: Deep Bass for rich, immersive low frequencies and Punchy Bass for vibrant, energetic sound. With IP68 water and dust resistance, it withstands harsh conditions, from beach parties to rainy outdoor events. Enjoy up to 34 hours of playback (28h standard + 6h with Playtime Boost), powered by a replaceable 99Wh lithium-ion battery (3h charge time). The redesigned, lighter chassis (5.89kg) ensures easy portability without sacrificing power.

Connect multiple speakers via Auracast™ for stereo sound or expansive multi-speaker setups. For audiophiles, lossless audio playback via USB-C delivers every detail (requires compatible source). Crafted with recycled plastic and fabric, packaged in FSC-certified paper with soy ink, it’s eco-conscious. Includes power cable, quick start guide, safety sheet, and warranty card.

• Sound: 37Hz–20kHz frequency response, >80dB signal-to-noise ratio
• Power: 2x65W (woofers) + 2x40W (tweeters) on AC; 2x60W + 2x40W on battery
• Battery: 99.02Wh Li-ion, 3h charge, replaceable
• Connectivity: Bluetooth 5.4 (A2DP 1.4, AVRCP 1.6), USB-C
• Durability: IP68 waterproof/dustproof
• Dimensions: 506.4 x 262.9 x 212.9 mm, 5.89kg