Pairing: Bose SoundLink Flex Portable Speaker (2 Gen) User Manual

Bose SoundLink Flex Portable Speaker (2nd Gen)

Introduction

The Bose SoundLink Flex Portable Speaker (2nd Gen) is a rugged, high-performance Bluetooth speaker designed for music lovers who demand big sound in a compact, portable package. With its bold audio, deep bass, and durable build, this speaker is perfect for outdoor adventures, travel, parties, and everyday use. Whether you're hiking, camping, or relaxing at home, the Bose SoundLink Flex delivers crisp, nuanced sound that fills any space.

Key benefits include up to 12 hours of battery life, IP67 water and dust resistance, and PositionIQ technology that automatically optimizes sound based on the speaker's orientation. The Bose SoundLink Flex Portable Speaker (2nd Gen) also supports stereo and party modes when paired with a second compatible unit, making it ideal for immersive listening experiences. Its packable size, nylon sport utility loop, and ultra-durable design make it a top choice for active users and audiophiles alike.

Available in multiple colorways, the Bose SoundLink Flex Portable Speaker (2nd Gen) typically retails between $149 and $179, depending on region and retailer. It's widely available through major electronics stores, online marketplaces, and the official Bose website.

Specifications: Bose SoundLink Flex Portable Speaker (2nd Gen)

• Dimensions: 2.06" H x 7.93" W x 3.56" D (52 x 201 x 90 mm)
• Weight: 1.291 lb (589 g)
• Battery Life: Up to 12 hours (varies with volume and content)
• Battery Charge Time: 4 hours via USB-C
• Water Resistance: IP67 (dustproof and waterproof)
• Bluetooth Version: 5.3 (supports AAC, aptX, SBC codecs)
• Audio Features: Shielded speakers, full-range drivers, PositionIQ, stereo, and party modes
• Connectivity: Multipoint Bluetooth, Bose app integration
• Microphones: Built-in for speakerphone and voice assistant
• Materials: Aluminum, fabric, nylon, plastic, silicone, steel
• Controls: Power, Bluetooth, shortcut, volume, play/pause
• Accessories: Removable rope handle, shoulder strap (sold separately)

Compared to similar portable speakers like the JBL Charge 5 and Ultimate Ears Boom 3, the Bose SoundLink Flex stands out with its superior sound quality, rugged build, and advanced Bluetooth features.

WHAT’S IN THE BOX

CONTENTS
Confirm that the following parts are included:

Important Safety Instructions

• If the speaker is exposed to salt or chlorinated water, gently rinse with fresh water following the exposure to remove residue. Make sure the connector port is fully dried out before charging.
• Clean only with a dry cloth or water water-dampened cloth. Do not use cleaning products.
• Only use attachments/accessories specified by the manufacturer.
• Refer all servicing to qualified personnel. Servicing is required when the apparatus does not operate normally, or has been physically damaged. A

WARNINGS/CAUTIONS

Contains small parts which may be a choking hazard. Not suitable for children under age 3.
This product contains magnetic material. Consult your physician on whether this might affect your implantable medical device.

• Keep the product away from fire and heat sources. Do NOT place naked flame sources, such as lighted candles, on or near the product. 
• Do NOT make unauthorized alterations to this product.
• Use this product only with an agency-approved LPS power supply that meets local regulatory requirements (e.g., UL, CSA, VDE, CCC).
• The battery provided with this product may present a risk of fire, explosion, or chemical burn if mishandled, incorrectly replaced, or replaced with an incorrect type.
• Do not expose products containing batteries to excessive heat (e.g., from storage in direct sunlight, fire, or the like).
• If the battery leaks, do not allow the liquid to come in contact with the skin or eyes. If contact is made, seek medical advice.
• The product label is located on the back of the product.

Using the Bose app 

The Bose app lets you set up and control the speaker from any device, such as a smartphone or tablet.
Using the app, you can manage Bluetooth connections, manage speaker settings, adjust the audio, choose your voice prompt language, and get any future updates and new features made available by Bose.

NOTE: If you’ve already downloaded the Bose app for another Bose product, you can add the speaker from the product list screen.

1. On your device, download the Bose app.

   

2. Follow the app instructions to add the speaker.

SPEAKER CONTROLS

Controls are located on the top of the speaker.

MEDIA PLAYBACK AND VOLUME

PHONE CALLS

BATTERY

CHARGE THE SPEAKER
CAUTION: Do not attempt to charge the speaker while the speaker is wet. Doing so may cause damage to the speaker. The speaker is waterproof, but the USB-C port must be fully dried out before charging. 

NOTE: Make sure you’re using the Bose-provided USB cable or a similar USB cable. Bose recommends using a 5V p, 1.5A capable power source.

1. Connect the USB-C end of the cable to the USB port on the side of the speaker.

   

2. Connect the USB-A end of the cable to a power source such as a computer or wall charger.

   

While charging, the battery light pulses white. When the battery is fully charged, the battery light glows solid white.

Charging time

• Allow up to 4 hours to fully charge the battery.1 
• A full charge powers the speaker up to 12 hours.2 At maximum volume, the battery lasts up to 3 hours.3
• Charging time and battery performance vary with the USB power supply capability, music content, and speaker volume.

Hear the battery level.

• Each time you power on the speaker, a voice prompt announces the battery level. When the speaker is in use, a voice prompt announces if the battery needs to be charged.
• Press and hold the Power button I until you hear a voice prompt. 

Battery protection mode

• When the speaker battery is depleted (0%), it enters battery protection mode. To reactivate the speaker, connect it to a power supply and press the Power button I.
• When not in use, store the speaker in a cool place. 

CAUTION: Do NOT store the speaker for extended periods when fully charged or with a remaining charge of less than 10%. 

STATUS

The Power, Bluetooth, and Shortcut lights are located on the top of the speaker.

POWER LIGHT
Shows the battery, charging, update, and error status.

BLUETOOTH LIGHT
Shows the Bluetooth connection status.

SHORTCUT LIGHT
Shows the status of speakers when linking is set as the shortcut.

CONNECT BOSE PRODUCTS

CONNECT TO A BOSE SMART SPEAKER OR  SOUNDBAR
With Bose SimpleSync technology, you can connect the speaker to a Bose Smart Speaker or Bose Smart Soundbar to listen to the same audio in two different rooms at the same time. 

NOTE: SimpleSync technology has a Bluetooth range of up to 30 ft (9 m). Walls and construction materials can affect reception.

Compatible products
You can connect the speaker to any Bose Smart Speaker or Bose Smart Soundbar. 

Popular compatible products include:

• Bose Smart Ultra Soundbar/Bose Ultra Soundbar
• Bose Smart Soundbar 900
• Bose Smart Soundbar 700/Bose Soundbar 700
• Bose Smart Soundbar 600
• Bose Soundbar 500
• Bose Smart Speaker 500/Bose Home Speaker 500
• Bose Home Speaker 300
• Bose Portable Smart Speaker/Bose Portable Home Speaker

STRAP USES

You can use the strap as a finger loop to easily carry the speaker. You can also attach it to a carabiner or a cord.

CARE AND MAINTENANCE

UPDATE THE SPEAKER
The speaker begins updating automatically when connected to the Bose app and an update is available. Follow the app instructions. When the update begins, the Power light blinks white 3 times (repeated) until the update is complete.
You can also update the speaker using the Bose updater website. On your computer, visit: bbtu.Btu.Bose.ose.comcom and follow the on-screen instructions. When the update begins, the Power light blinks white 3 times (repeated) until the update is complete.

CLEAN THE SPEAKER 
The speaker may require periodic cleaning.

• Clean the surface of the speaker with a soft, damp cloth (water only). Make sure the USB-C port is fully dried out before charging.
• Do not use any solvents, chemicals, or cleaning solutions containing alcohol, ammonia, or abrasives. 
• If the speaker is exposed to salt or chlorinated water, gently rinse with fresh water following the exposure to remove residue. Make sure the USB-C port is fully dried out before charging.

STORE THE SPEAKER
When not in use, store the speaker in a cool place. 

CAUTION: Do NOT store the speaker for extended periods when the battery is fully charged or has a low charge (see page 25).

REPLACEMENT PARTS AND ACCESSORIES
Replacement parts and accessories can be ordered through Bose customer service. Visit: support.Bsupport.Bose.ose.com/com/fleflex2x2

Troubleshooting: Bose SoundLink Flex Portable Speaker (2nd Gen)

• Speaker not turning on: Ensure the battery is charged. Try a different USB-C cable or power source.
• Bluetooth connection issues: Restart both devices, forget the speaker in Bluetooth settings, and reconnect. Update the Bose app for the latest firmware.
• No sound or low volume: Check volume settings on both the speaker and connected device. Ensure the speaker is not muted.
• Water damage: If exposed to water, dry thoroughly before use. The IP67 rating protects against dust and immersion, but avoid saltwater or chemicals.
• Pairing problems: Only compatible with other Bose SoundLink Flex (2nd Gen) units for stereo or party mode.

Preventive measures include regular cleaning, avoiding extreme temperatures, and using the included strap for secure carrying. The Bose SoundLink Flex Portable Speaker (2nd Gen) comes with a limited warranty. For support, visit the Bose website or contact customer service at 1-800-444-2673.

TRY THESE SOLUTIONS FIRST
If you experience problems with the speaker:

• Power the speaker off and then on again (see page 19).
• Check the status lights (see page 26).
• Make sure your device supports Bluetooth connections (see page 12).
• Charge the speaker (see page 24).
• Increase the volume on the speaker, your device, and the music app.
• Move your device closer to the speaker (30 ft or 9 m) and away from any interference or obstruction.
• Try connecting another device (see page 12).

If you couldn’t resolve your issue, see the table below to identify symptoms and solutions to common problems. You can also access troubleshooting articles, videos, and other resources.
If you’re unable to resolve your issue, contact Bose customer service.

OTHER SOLUTIONS

LIMITED WARRANTY

• The speaker is covered by a limited warranty. Visit our website for details of the limited warranty. 
• To register your product,  for instructions. Failure to register will not affect your limited warranty rights.

Pros & Cons: Bose SoundLink Flex Portable Speaker (2nd Gen)

Pros

• Exceptional sound quality with deep bass
• Ultra-durable, water- and dust-resistant (IP67)
• Up to 12 hours of battery life
• Compact, lightweight, and easy to carry
• Advanced Bluetooth 5.3 with multipoint connectivity
• PositionIQ technology for optimal sound in any orientation
• Supports stereo and party modes with a second unit
  • No audio cable included
  • Does not support 360-degree sound
  • Compression at maximum volume
  • Only pairs with the same-generation Bose speakers
  • Premium price compared to some competitors