JBL Boombox 3 Portable Bluetooth Speaker

Thundering Sound & Rugged Design
Take the bass wherever you go with the JBL Boombox 3. This mighty speaker delivers powerful JBL Original Pro Sound thanks to its 3-way drivers, including a booming subwoofer, mid-range drivers, and crisp tweeters. It fills large spaces with deep, distortion-free audio—even at high volumes—with significantly less compression than competitors reddit.com+15rtings.com+15soundguys.com+15amazon.com.

Standout Features:

• Nearly 30-hour battery life on a single charge with moderate use, though max volume can reduce it to 3–5 hours .

• IP67-rated durability—submersible up to 1 m for 30 mins and protected against dust rtings.com.

• Bluetooth 5.3 with PartyBoost lets you link with other compatible JBL speakers for stereo or surround sound jbl.com+6soundguys.com+6wifihifi.com+6.

• Built-in power bank (USB‑A) enables phone charging on the go harmanaudio.com+3soundguys.com+3amazon.com+3.

• AC-powered & wired support via 3.5 mm aux input, plus sustained high output when plugged in .

• Sturdy metal handle with silicone grip makes carrying easier, though at approx. 6.7 kg (14.7 lb), it’s best suited for short transport amazon.com+4soundguys.com+4wifihifi.com+4.

• Custom EQ through JBL Portable app lets you fine-tune bass, mids, and highs rtings.com+2soundguys.com+2amazon.com+2.

User Insights:

• As one Redditor notes:

  “Playing music at 80–100% volume … will definitely fully drain the battery in about 4–5 hours” reddit.com+1reddit.com+1

• But at moderate volume (~50–70%), users enjoy 20–30 hours playback .