JBL Boombox 4 Portable Bluetooth Speaker – High-Power, Waterproof & Dustproof Outdoor Speaker with JBL Pro Sound, Deep Bass, 28-Hour Battery Life, Bluetooth 5.4, USB-C, AI Sound Boost, Multi-Speaker Connectivity – Blue

Audio Performance

• Total Output Power:
• AC Mode: 210 W RMS (2 × 65 W woofers + 2 × 40 W tweeters)
• Battery Mode: ~200 W RMS (2 × 60 W woofers + 2 × 40 W tweeters)
• Frequency Response: 37 Hz – 20 kHz
• Signal-to-Noise Ratio: > 80 dB
• Transducers:
• 2 × 5″ (123 mm) woofers
• 2 × 0.75″ (20 mm) tweeters
• 3 passive radiators (2 circular + 1 racetrack)
• AI Sound Boost: Automatically enhances audio clarity and output power
• Bass Modes: Multiple bass boost settings for Deep or Punchy bass
• Lossless USB-C Audio Playback: Wired digital audio input supported
• Wireless Connectivity
• Bluetooth Version: 5.4
• Bluetooth Profiles: A2DP 1.4, AVRCP 1.6
• Bluetooth Frequency Range: 2.4 – 2.4835 GHz
• Multi-Speaker Support: Pair multiple compatible JBL speakers for synchronized sound
• Battery & Power
• Battery Type: Rechargeable Li-ion 99.02 Wh (~4584 mAh)
• Playtime: Up to 28 hours standard, up to 34 hours with Playtime Boost
• Battery Charge Time: ~3 hours
• Built-in Powerbank: Charges phones and devices from the speaker’s battery
• AC Power Support: 100 – 240 V, 50/60 Hz input
• Durability
• IP68 Rated: Waterproof and dustproof for outdoor use
• Rugged Design: Built for beaches, backyards, and poolside parties
• Physical Dimensions
• Dimensions (W×H×D): ~51 × 26 × 21 cm
• Weight: ~5.9 kg
• Color: Blue
• Special Features
• AI Sound Boost: Optimizes sound in real time
• Dual Bass Boost Modes: Choose between Deep Bass or Punchy Bass
• Auracast™ Multi-Speaker Connectivity: Expand audio coverage by linking multiple JBL speakers
• LED Logo Lights: Visual indication of active bass mode
• In the Box
• JBL Boombox 4 Portable Bluetooth Speaker
• AC Power Cord (region-specific plug)
• Quick Start Guide
• Warranty Card