JBL Flip 4 Review

The JBL Flip 4, as its name implies, is the fourth generation of the Flip Portable Bluetooth Speaker, the biggest novelty being the IPX7 certification. In other words, Flip 4 is resistant to water to a depth of one meter, while Flip 3 was only resistant to possible splashing.


We get the impression that solid Bluetooth speakers are still a neglected category. Buyers of such devices are usually divided into those who buy (or receive) a “boombox”, and those who are notorious for the prestigious Bang & Olufsen models or Bowers & Wilkins’ Zeppelin. The first category cannot be expected to have some quality, and the latter is quite unavailable in price. In the middle price range of around 100 $, it is possible to get decent sound and compactness and good battery life. JBL is sovereign in this category, with its Charge, Flip and Pulse models.

We liked the new Flip 4, which looks almost indistinguishable from the Flip 3. The design is a classic cylindrical shape, and in addition to the mesh fabric in the center, the slight thickening in one part prevents the speaker from rotating on the base, which could happen with the Flip 3. The edges, turn on button, JBL Connect buttons, as well as the AUX and micro-USB slots, are covered with rubber. Above them, there are buttons on the fabric for Bluetooth connectivity, volume up and mute, and a play button that can also be used to start a personal assistant (Siri, Google Now), which must be selected in the JBL Connect application.


The dimensions of the speakers are 68 x 175 x 70 mm (HWD) and weigh 515 grams. Battery life is declared at 12 hours, but of course, it depends on the listening volume, so it can last shorter, but of course longer than the time stated. As with its predecessors, there are two speaker units inside the speakers with a diameter of 40 mm with a total power of 2 x 8W.

The real surprise lies in the sound quality. The new Flip 4 has far more precise bass and cleaner treble than the predecessor of the Flip 3. The sound coming from such a small device is more than impressive, especially when listening at medium volume.

JBL Flip 4 Waterproof Portable Bluetooth Speaker - Black
  • Wirelessly connect up to 2 smartphones or tablets to the speaker and take...
  • Built-in 3000mAh rechargeable li-ion battery Supports up to 12 hours of...
  • Ipx7 waterproof means no more worrying about rain or spills; you can even...
  • JBL connect+ allows you to Link more than 100 JBL connect+ enabled speakers...
  • Dual external passive radiators demonstrate just how powerful your speaker...

The sound is great! When we compare this speaker with the older Flip 3 and Charge 2 – they sounded like hollow cans. And until recently, they were quite acceptable to us! The sound of Flip 4 is completely comparable to the current champion of this category, the far more expensive Bang & Olufsen BeoPlay A1 speaker.

JBL Flip 4 Features

  • Wireless Bluetooth Streaming: Wirelessly connect up to 2 smartphones or tablets to the speaker and take turns playing impressive stereo sound.
  • 12 hours of playtime: Built-in 3000mAh rechargeable Li-ion battery supports up to 12 hours of playtime.
  • IPX7 Waterproof: No more worrying about rain or spills; you can even submerge Flip 4 in water.
  • JBL Connect+: Link more than 100 JBL Connect+ enabled speakers together to amplify the party.
  • Speakerphone: Take crystal clear calls from your speaker with the touch of a button thanks to the noise and echo-canceling speakerphone.
  • Voice Assistant Integration: Access Siri or Google Now from your JBL speaker with a simple button press.
  • Lifestyle Material: The durable fabric material and rugged rubber housing allow your speaker to outlast all of your adventures.
  • JBL Bass Radiator: Hear the bass, feel the bass, see the bass. Dual external passive radiators demonstrate just how powerful your speaker is.

The manufacturer specifies a 12-hour battery life, but of course, it depends on the volume. It lasts us a full five days, with several hours of listening per day. It’s just a shame that the device doesn’t come with a charger, only a Micro-USB cable. A decent 2-3 A charger could really come at that price, which would charge the battery faster than the four hours it took us to charge with a handy charger.

jbl-flip-4-jbl-connect-applicationWhen it comes to adjusting the volume, Flip 4 is paired with your cellphone here, that is, adjusting the volume on the speaker automatically adjusts the volume on the cellphone as well, which is easier than double adjusting “first cellphone then speaker”, but it is therefore quite difficult to adjust at the optimum volume, especially when quietly listening, for example, before going to bed.

Flip shows true strength when chaining. So far, we’ve only managed to pair two identical JBL speakers, but Flip 4 has a new Connect + protocol, which can connect up to 100 speakers in so-called party mode (all playing the same), or, in turn, connect two speakers in a stereo pair. All you have to do is persuade all your friends to buy Flip 4, because, unfortunately, older JBL speakers can’t pair with it.

Mode selection takes place in the JBL Connect app, available for Android and iOS. In addition, the application is also used to activate Google Assistant.

Flip 4 has a higher degree of protection than its predecessor. It is now declared IPX7, meaning it can be fully submerged in water at depths of up to one meter. We don’t try that often, but the protection should be sufficient for summer showers or unintentional bathing.

JBL Flip 4 Specifications

  • Bluetooth version: 4.2
  • Support: A2DP V1.3, AVRCP V1.6, HFP V1.6, HSP V1.2
  • Transducer: 2 x 40mm
  • Output power: 2 x 8W
  • Frequency response: 70Hz – 20kHz
  • Signal-to-noise ratio: ≥80dB
  • Battery type: Lithium-ion polymer (3.7V, 3000mAh)
  • Battery charge time: 3.5 hours @ 5V1A
  • Music playing time: up to 12 hours (varies by volume level and audio content)
  • Bluetooth transmitter power: 0 – 9dBm
  • Bluetooth transmitter frequency range: 2.402 – 2.480GHz
  • Bluetooth transmitter modulation: GFSK, π/4-DQPSK, 8DPSK
  • Dimensions (H x W x D): 68 x 175 x 70 (mm)
  • Weight: 515g

You can find a manual here: JBL Flip 4 User Manual

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In short, this is a speaker that you can carry with you wherever you go, weighs 500 grams, is water-proof, and can last the entire weekend without charging. It will be enough for a mini party of two, four or even six. And only when it merges with other Flips 4 – the sky is the limit.

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