Logitech

Logitech 985-000809 Jaybird X4 Wireless Sport Bluetooth Headphones

3.9 (677 reviews)

Elevate Your Workout with Jaybird X4 Wireless Sport Headphones Designed for athletes and fitness enthusiasts, the Jaybird X4 Wireless Bluetooth Headphones deliver premium sound and a secure, comfortable fit. With sweat-proof and waterproof protection, these headphones are your perfect companion f...

$48.99*
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*Price sourced from Amazon.com. Last updated:Jun 19, 2026.Price and availability are subject to change.

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Overview

Elevate Your Workout with Jaybird X4 Wireless Sport Headphones

Designed for athletes and fitness enthusiasts, the Jaybird X4 Wireless Bluetooth Headphones deliver premium sound and a secure, comfortable fit. With sweat-proof and waterproof protection, these headphones are your perfect companion for any workout, in any weather.

Specifications:

  • Brand: Logitech (Jaybird)
  • Model: 985-000809
  • Type: Wireless Bluetooth Headphones
  • Playtime: Up to 8 hours
  • Water Resistance: Sweatproof and Waterproof (IPX7)
  • Fit: Sport-Fit Plus (Over-ear or Under-ear)
  • Ear Tips: Interchangeable Comply Ultra thermo-reactive tips
  • Sound Customization: Custom EQ via Jaybird app
  • Color: Storm Metallic/Glacier

Key Features

8 HOURS OF PLAYTIME: A single charge provides 8 hours of wireless play time - plenty of power for a full day outside

SWEATPROOF & WATERPROOF: Sweat-proof and waterproof (IPX7) protection for gym and fitness workouts and running in all weather conditions

SPORT-FIT PLUS: Comfortable headphone design runs over your ears for a secure sport fit or under for more relaxed situations

COMFORTABLE FIT: Interchangeable Comply Ultra thermo-reactive tips provide enhanced durability rich sound and conform to individual ear canals for a comfortable secure fit

PREMIUM SOUND: The Jaybird app provides Custom EQ allows athletes to customize sound EQ and save personal settings to the buds

MUSIC & CALLS: Headphones allow users to manage phone calls and control and listen to music without interrupting gym workout

Specifications

Battery Life
8 hours (wireless play time)
Water Resistance Rating
IPX7 (Sweatproof & Waterproof)
Fit Type
Sport-Fit Plus (Over-ear/Under-ear)
Ear Tips
Interchangeable Comply Ultra Thermo-reactive Tips
Sound Customization
Jaybird app with Custom EQ
Functionality
Music & Call Management

Pros & Cons

👍 Pros

  • Offers up to 8 hours of playtime on a single charge, suitable for extended outdoor activities.
  • Features sweat-proof and waterproof (IPX7) protection, making them ideal for rigorous workouts and various weather conditions.
  • Designed with a versatile Sport-Fit Plus, allowing for secure over-ear placement or a more relaxed under-ear fit.
  • Includes interchangeable Comply Ultra thermo-reactive tips for enhanced durability, rich sound, and a comfortable, secure fit conforming to individual ear canals.
  • Allows for sound customization through the Jaybird app's Custom EQ, where users can save personal settings directly to the earbuds.

👎 Cons

  • The 8-hour battery life, while generous, may not be sufficient for ultra-long endurance events without recharging.
  • Customization of sound EQ is dependent on using the Jaybird app, which may not appeal to all users.
  • The "relaxed situations" fit option may not provide the same level of security as the over-ear sport fit during active movement.
  • The thermo-reactive tips are interchangeable, implying they may need to be replaced over time for optimal fit and sound.
  • The specific sound signature without EQ customization may not satisfy all listeners by default.

Frequently Asked Questions

The Jaybird X4 Wireless Sport Bluetooth Headphones provide 8 hours of wireless playtime on a single charge, which is designed to last through a full day outside.
Yes, these headphones offer sweat-proof and waterproof IPX7 protection, making them suitable for gym workouts, fitness activities, and running in all weather.
The headphones feature a Sport-Fit Plus design for secure over-ear wear or a relaxed under-ear option, and they come with interchangeable Comply Ultra thermo-reactive tips that conform to individual ear canals for a comfortable, secure fit.
Yes, the Jaybird app provides a Custom EQ feature that allows athletes to customize sound settings and save their personal preferences directly to the earbuds for premium sound.
Yes, these headphones allow users to manage phone calls and control music playback without interrupting their gym workout or other activities.