Descriptions

About: Open Box - JBL Boombox 4 Portable Waterproof Speaker - Black (Final Sale Item) 

This is a professionally re-certified product. They may or may not include the original manufacturer packaging.

Every unit is thoroughly inspected and tested to ensure it meets the same performance standards as a brand-new product—so you get reliable quality at a great price.

Turn up the volume anywhere with the JBL Boombox 4 portable Bluetooth speaker. Powered by AI Sound Boost, two 5-inch woofers, two tweeters, and three passive radiators, it delivers massive JBL Pro Sound with deep bass and minimal distortion. Featuring IP68 waterproof and dustproof protection, up to 34 hours of total playtime, Auracast multi-speaker pairing, and a swappable battery design.

Features:

• Unbeatable JBL Pro Sound with AI Sound Boost: Dynamically analyzes audio in real time to maximize loudness and power while eliminating distortion at high volumes.
• Upgraded Driver & Radiator Array: Dual 5-inch woofers, dual 0.75-inch tweeters, and three passive radiators deliver 210W AC output with thunderous bass and crisp highs.
• Up to 34 Hours Total Playtime: Provides up to 28 hours of continuous playback on a full charge, plus up to 6 extra hours with JBL Playtime Boost.
• IP68 Waterproof & Dustproof: Complete environmental sealing protects against heavy rain, dust, dirt, and full water immersion.
• Swappable Battery System: Features a removable, user-replaceable rechargeable battery pack for continuous off-grid power.
• Auracast Multi-Speaker Connectivity: Wirelessly connect multiple Auracast-enabled JBL speakers or stereo-pair two units for a wider sound stage.
• Dual Bass Boost Modes: Toggle easily between Deep Bass and Punchy Bass modes with a illuminated button on the top control panel.
• Lossless USB-C Audio & Powerbank: Play high-resolution lossless audio via USB-C or charge mobile devices directly from the internal battery.

Specifications:

• Output Power (AC Mode): 210W Total RMS (2 x 65W RMS Woofers + 2 x 40W RMS Tweeters)
• Output Power (Battery Mode): 200W Total RMS (2 x 60W RMS Woofers + 2 x 40W RMS Tweeters)
• Transducers: 2 x 5" (123 mm) Woofers, 2 x 0.75" (20 mm) Tweeters, 3 Passive Radiators
• Frequency Response: 37 Hz – 20 kHz
• Signal-to-Noise Ratio: > 80 dB
• Battery Type: Swappable Rechargeable Li-ion Battery Pack 99.02Wh (21.6V / 4584 mAh equivalent)
• Music Playtime: Up to 28 hours (plus up to 6 hours with Playtime Boost; 34 hours total)
• Battery Charge Time: 3 hours
• Waterproof & Dustproof Rating: IP68
• Bluetooth Version: 5.4
• Bluetooth Profiles: A2DP 1.4, AVRCP 1.6
• Multi-Speaker Connection: Auracast & Stereo Pairing
• Wired Connections: USB Type-C (Lossless audio input & Powerbank output)
• Dimensions (W x H x D): 19.9" x 10.4" x 8.4" (506.4 mm x 262.9 mm x 212.9 mm)
• Weight: 13.0 lbs (5.89 kg)