The JBL Xtreme 3 was credited by expert testers for its sturdy build quality, balanced mid-range vocals, and stereo soundstage. Product analysts from SoundGuys noted that it came with a carrying strap for more convenient carrying and had bumpers on both sides to prevent excessive damage in case it gets dropped. They liked how clear vocals and mids sounded during their sound tests and were impressed with how loud it got. Specialists from Rtings liked that its JBL Portable app (which also works on the JBL had a graphic EQ for easy sound customization and that its latency on Android and iOS devices was OK for listening to music or movie watching with no lag. Its 12-hour battery life was also impressive, but the JBL Charge 3 seems to last significantly longer. Have a look at it in our JBL Charge 3 speaker review.
However, testers noted that the speaker did not have the best bass output (see our Kove Commuter 2 review if this is an area of focus for you). They also complained about its lack of WiFi connectivity.