Thumbnail of product Flex Sport from brand JLab
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Headphone JLab Flex Sport

JLab
Audio
Headphone

The JLab Flex Sport earbuds are designed to provide an immersive audio experience while being suitable for active use. With a frequency range of 20 to 20,000 Hz, they ensure a wide sound spectrum, while their sensitivity of 110 dB allows for clear and powerful sound.

Their in-ear design ensures prolonged comfort and excellent sound isolation, ideal for fully immersing yourself in your music. Equipped with noise cancellation, these earbuds allow you to fully enjoy your favorite tracks without external distractions.

Weighing only 191 g, the Flex Sport model is lightweight and easy to carry. Its Bluetooth 5.0 connectivity ensures a fast and reliable connection, while its range of 9.144 m allows you to move freely.

The built-in battery offers an impressive autonomy of 20 hours of continuous audio playback and recharges in just 3 hours. This allows you to enjoy your music without interruption and without worrying about frequent recharging.

In summary, the JLab Flex Sport earbuds combine audio performance, comfort, and practicality, making them an ideal choice for music lovers on the go.

Manual of product Flex Sport

First page image of the manual for Flex Sport

User Manual
3 pages
View manual
8 10

Editorial note

The JLab Flex Sport earbuds stand out for their immersive audio experience, thanks to a wide frequency range of 20 to 20,000 Hz and a sensitivity of 110 dB, delivering clear and powerful sound. Their in-ear design and closed acoustic system ensure optimal sound isolation, allowing users to fully immerse themselves in their music without external interference. Additionally, their lightweight and foldable design (191 g) makes them easy to transport, making them an ideal choice for active individuals. In terms of battery life, the built-in rechargeable battery offers up to 20 hours of continuous playback, although the 3-hour charging time may seem a bit long for some. The Bluetooth 5.0 connectivity ensures a fast and stable connection with various devices, making wireless use very convenient. However, some drawbacks are worth noting. The lack of a carrying case in the packaging may pose protection issues during transport, while the absence of a power adapter and charger can be inconvenient for users without alternative charging options. Furthermore, the product does not feature standard audio connectors like the 3.5 mm, limiting its compatibility with certain devices. Finally, the lack of additional features, such as a built-in music player or FM radio, may disappoint those looking for multifunctional earbuds. Overall, the JLab Flex Sport offers excellent audio performance and a practical design, but improvements could be made in terms of features and included accessories for optimal value for money.

Score details

User experience

The user experience is very satisfying thanks to an in-ear design and a closed acoustic system providing optimal sound isolation, allowing for full enjoyment of music without external distractions.

Performance

The audio performance is impressive with a wide frequency range (20 - 20000 Hz) and a sensitivity of 110 dB, ensuring clear and powerful sound for an immersive listening experience.

Battery life

The built-in rechargeable battery offers a continuous playback time of 20 hours, although the 3-hour charging time may seem long for some users.

Design

The design is foldable and lightweight (191 g), making it easy to carry and store, perfect for active or on-the-go individuals.

Value for money

Although the product offers good performance, the lack of a carrying case and a power adapter in the packaging may make usage less convenient and decrease the value for money.

Features

The product lacks additional features such as a built-in music player or FM radio, which may disappoint users looking for multifunctional headphones.

Advantages

Clear and powerful sound (20 - 20000 Hz)

Optimal sound isolation with closed design

20 hours of playback time

Fast and stable Bluetooth 5.0 connectivity

Foldable and lightweight, easy to carry

Disadvantages

No carrying case included

No power adapter provided

No 3.5 mm audio jack

Lack of additional features

3-hour charging time

Technical Specifications Flex Sport

General Information

Headphones/Earphones

  • Headphone frequency
    20 - 20000 Hz
  • Headset sensitivity
    110 dB
  • Impedance
    32 Ohm
  • Reading unit
    40 mm
  • Type of magnet
    Neodymium
  • Acoustic system
    Closed
  • DHT, total harmonic distortion
    15 %
  • Noise reduction
    Yes
  • Ear coupling
    Circum-aural

Microphone

  • Microphone sensitivity
    41 dB
  • Noise-cancelling microphone
    Yes
  • Microphone type
    Integrated

Weight and dimensions

  • Weight
    191 g

Packaging contents

  • Cables included
    USB Type-C
  • Charging case
    No
  • Charging case
    No
  • Warranty card
    Yes
  • Charging case
    No
  • Charging case
    No
  • Warranty card
    Yes
  • Charging case
    No

Battery

  • Standby autonomy
    300 h
  • Battery type
    Built-in battery
  • Battery technology
    Lithium Polymer (LiPo)
  • Battery capacity
    300 mAh
  • Rechargeable battery
    Yes
  • Battery voltage
    5 V
  • Battery capacity of the right earbud
    100 mAh
  • Battery capacity of the left earbud
    330 mAh
  • Battery recharge time
    3 h
  • Streaming audio playback
    20 h

Representation / realization

  • Indicators
    Activity
  • Volume order
    Buttons
  • Accelerometer
    No
  • Foldable
    Yes
  • International Protection Code (IP)
    IP44
  • Accelerometer
    No
  • Protection functions
    Waterproof
  • Accelerometer
    No
  • Product type
    Headset
  • Product color
    Black
  • Type of headset
    Binaural
  • Portable headset style
    Headband
  • Recommended use
    Sports
  • Order unit type
    Integrated control unit

Connectivity

  • Bluetooth model
    5.0
  • Bluetooth Profiles
    A2DP, AVRCP, HFP, HSP
  • Wireless router range
    9.144 m
  • 3.5 mm connector
    No
  • USB connector
    USB Type-C
  • Connectivity technology
    Wireless
  • USB Connectivity
    Yes
  • 3.5 mm connector
    No
  • USB Connectivity
    Yes

Other features

  • User manual
    Yes
  • 2.5 mm connector
    No
  • Brand compatibility
    Apple
  • 2.5 mm connector
    No
  • 2.5 mm connector
    No
  • Quantity of programmable buttons
    3
  • User manual
    Yes
  • 2.5 mm connector
    No
  • 2.5 mm connector
    No
  • 2.5 mm connector
    No
  • 2.5 mm connector
    No
  • 2.5 mm connector
    No
  • 2.5 mm connector
    No
  • 2.5 mm connector
    No
  • 2.5 mm connector
    No
  • 2.5 mm connector
    No
  • User manual
    Yes
  • 2.5 mm connector
    No
  • Load voltage
    5 V
  • 2.5 mm connector
    No
  • 2.5 mm connector
    No

Music player

  • Music player
    No
  • Music player
    No
  • Music player
    No

Minimum system requirements

  • Mac Compatibility
    Yes

Frequently Asked Questions

At what level does the volume become too high?
A volume of 80 decibels can be harmful to hearing. When the sound exceeds 120 decibels, damage can occur instantly. The risk of hearing damage is related to the frequency and duration of listening.
Is it possible to make hands-free calls with my headphones?
Recent headphones generally have a small built-in microphone that allows for making calls.
What is noise cancellation?
Noise cancellation helps to reduce ambient noise.
What is Bluetooth?
Bluetooth allows for the wireless transmission of data between electronic devices via radio waves. Generally, the range between the two devices can reach ten meters.
What is the weight of the JLab Flex Sport?
The weight of the JLab Flex Sport is 191 grams.
How long does it take to charge the battery of the JLab Flex Sport?
The time required to charge the battery of the JLab Flex Sport is 3 hours.
Is the manual for the JLab Flex Sport available in French?
Unfortunately, the manual for the JLab Flex Sport is not available in French. It is only offered in English.

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Presentation of product Flex Sport specifications from brand JLab

General Information

The JLab Flex Sport earbuds, from the renowned brand JLab, stand out for their sound quality and innovative design. This model, identified by the code Flex Sport | IEUHBFLEXSPORTRBLK4, is designed to deliver exceptional audio performance. The EAN code, 0812887018029, allows for precise identification in the distribution system.

Headphones/Earbuds

The JLab Flex Sport features a frequency range of 20 to 20,000 Hz, ensuring a wide sound spectrum for an immersive listening experience. With a sensitivity of 110 dB, these earbuds guarantee clear and powerful sound, perfect for appreciating every musical nuance. The impedance of 32 Ohms and the 40 mm driver contribute to optimal audio quality. Thanks to the Neodymium magnet, these earbuds offer superior sound efficiency. The closed acoustic design allows for effective sound isolation, enabling the user to fully immerse themselves in their music. With a total harmonic distortion of 15 %, the fidelity of audio reproduction is assured. Additionally, the noise-canceling function helps block out external sounds, optimizing the listening experience. The in-ear coupling promotes prolonged comfort.

Microphone

The built-in microphone has a sensitivity of 41 dB, ensuring precise sound capture. It is also equipped with a noise-canceling function, which helps reduce surrounding sound interference. This practical solution facilitates quality recordings without added clutter.

Weight and Dimensions

Weighing only 191 g, the JLab Flex Sport is designed to be lightweight and easy to handle, ensuring a pleasant user experience.

Packaging Contents

Included in the packaging is a cable to ensure electrical connection. However, there is no power adapter or carrying case provided. A quick start guide is included to facilitate initial use. Although no additional earbuds or charger are provided, a warranty card is included to protect your purchase.

Battery

The JLab Flex Sport earbuds feature a built-in battery offering up to 300 hours of standby time and 20 hours of continuous playback. The nickel-metal hybrid (NiMH) battery technology ensures lasting performance. The battery capacity is 300 mAh, while the charging time is 3 hours, allowing for extended use without frequent interruptions.

Representation / Realization

The earbuds are equipped with activity indicators that show the operating status. The volume control is digital, making audio control easy. Although these earbuds do not have a Plug and Play function, their foldable design allows for easy storage and transport. They also benefit from IP44 protection against the elements, ensuring reliable use in various conditions. The model is binaural and comes in black, adding a modern touch.

Connectivity

The JLab Flex Sport uses Bluetooth 5.0 for a fast and stable wireless connection, with a range of 9.144 meters. They support various Bluetooth profiles such as A2DP, AVRCP, HFP, and HSP, ensuring extensive compatibility. The USB Type-C connector allows for efficient charging, although there is no standard 3.5 mm connector included.

Other Features

A charging indicator is present to show the battery status. Although no neck strap, storage pouch, or extension cable is included, the product is compatible with all brands. The model features three programmable buttons for advanced customization.

Music Player

The earbuds are not equipped with a built-in music player, memory card reader, or FM radio function, thus limiting their multimedia functionality.

Minimum System Requirements

The JLab Flex Sport is not compatible with Mac systems, which may restrict their use for some users.