Bose SoundLink Flex (2nd Gen)

Name: Bose SoundLink Flex (2nd Gen)
Brand: Bose
SKU: 2906

Manufacturer: Bose

The Bose SoundLink Flex (2nd Gen) is a wireless portable speaker designed for on-the-go use, featuring a rugged IP67-rated enclosure that offers full dust and water resistance. Weighing around 590 g with a compact footprint, it includes physical controls directly on the device, voice prompts, and a sleep timer, rounding out a feature set aimed at everyday portability.

Audio output is handled by a single 20W driver complemented by a passive radiator, covering a frequency range of 64 Hz to 17,500 Hz. The speaker connects via Bluetooth 5.3 and supports both aptX and AAC codecs, with a stated wireless range of 10 m. Multipoint connectivity allows pairing with up to two devices simultaneously, and stereo pairing is supported for use alongside a second compatible unit. Charging is handled over USB-C with a 4-hour charge time delivering up to 12 hours of playback.

Pros

IP67 rating ensures full dust and water resistance, making it suitable for outdoor and poolside use
Multipoint connectivity allows simultaneous pairing with two devices without needing to manually switch
Stereo pairing support lets two units be linked for a wider soundstage
A passive radiator extends low-frequency reproduction down to 64 Hz for a speaker of this size
Battery level indicator helps users monitor remaining charge at a glance
USB-C charging offers a widely compatible and modern wired charging solution

Cons

No stereo speakers in a single unit, meaning true stereo sound requires a second speaker
Wireless charging is not supported, limiting charging flexibility
Bluetooth range is limited to 10 m, which may be restrictive in larger open spaces
No 3.5 mm audio jack or AUX input means wired audio playback is not an option
Voice commands are absent, requiring all controls to be handled manually on the device
A single microphone is included, which may limit hands-free call quality in noisy environments

Who is this for?

This speaker is a solid fit for users who frequently take it outdoors or near water, given its IP67 dust and water resistance that handles splashes, rain, and dusty environments without issue. Those who switch between multiple devices throughout the day will benefit from multipoint connectivity supporting two simultaneous Bluetooth pairings, reducing the friction of reconnecting. The 12-hour battery life also makes it a practical companion for extended outdoor sessions, travel, or all-day use away from a power source.

Who is this NOT for?

Users who prioritize high-fidelity audio reproduction may find the single-driver mono configuration and frequency ceiling of 17,500 Hz limiting, as the speaker does not deliver stereo sound on its own. Those who rely on wired audio connections will also find this speaker unsuitable, since there is no 3.5 mm jack or AUX input of any kind. Additionally, users who need a wide wireless range — such as in large open spaces or multi-room setups — will likely find the 10 m Bluetooth range insufficient for their needs.

Design:

Ingress Protection (IP) rating	IP67
volume	952.872579648 cm³
control panel placed on a device	✓
water resistance	Water resistant
has a touch screen	✕
has RGB lighting	✕
has a detachable cable	✕
is a neckband speaker	✕
has a remote control	✕
weight	589.67 g
height	90.42 mm
width	201.42 mm
thickness	52.32 mm

The Bose SoundLink Flex (2nd Gen) has a compact physical profile, measuring 201.42 mm wide, 90.42 mm tall, and 52.32 mm thick, with a total volume of approximately 952.87 cm³ and a weight of 589.67 g. It carries an IP67 ingress protection rating, meaning it is fully dust-tight and capable of withstanding water immersion, making it a water-resistant unit for outdoor use. Controls are placed directly on the device itself, while there is no touch screen, remote control, RGB lighting, or detachable cable included in the design.

Sound quality:

has stereo speakers	✕
has a subwoofer	✕
highest frequency	17500 Hz
lowest frequency	64 Hz
audio output power	1 x 20W
Has a passive radiator	✓
number of microphones	1
has a magnetic shielding	✕

The speaker uses a single 20W driver paired with a passive radiator to reproduce audio across a frequency range of 64 Hz to 17,500 Hz, and it does not include a subwoofer or stereo speaker configuration. There is no magnetic shielding present. One built-in microphone is included for hands-free use.

Power:

Battery life	12 hours
charge time	4 hours
has a battery level indicator	✓
has a rechargeable battery	✓
has a removable battery	✕
has wireless charging	✕

The speaker is equipped with a built-in rechargeable battery that delivers up to 12 hours of playback on a full charge, which takes approximately 4 hours to complete via wired charging — wireless charging is not supported. A battery level indicator is included to keep track of remaining power, while the battery itself is not removable.

Connectivity:

multipoint count	2
Bluetooth version	5.3
supports Bluetooth pairing using NFC	✕
has a socket for a 3.5 mm audio jack	✕
has an AUX input	✕
has aptX Lossless	✕
has LDAC	✕
has aptX Adaptive	✕
has aptX HD	✕
has aptX	✓
has aptX Low Latency	✕
has AAC	✓
has AirPlay	✕
has Chromecast built-in	✕
has Auracast	✕
has Bluetooth LE Audio	✕
maximum Bluetooth range	10 m
supports Wi-Fi	✕
USB ports	0
Has USB Type-C	✓
has a 3.5mm male connector	✕
has an external memory slot	✕
is DLNA-certified	✕
supports Ethernet	✕
has a microphone input	✕

Wireless audio is handled via Bluetooth 5.3, supporting both aptX and AAC codecs, while higher-tier options such as aptX HD, aptX Adaptive, aptX Lossless, LDAC, and aptX Low Latency are not available. The speaker supports multipoint connectivity with up to two devices simultaneously and has a maximum Bluetooth range of 10 m. NFC pairing, AirPlay, Chromecast, Auracast, and Bluetooth LE Audio are not supported. On the wired side, a USB-C port is present for charging, but there is no 3.5 mm audio jack, AUX input, 3.5 mm male connector, USB ports for data, external memory slot, microphone input, Ethernet, or Wi-Fi, and the unit is not DLNA-certified.

Features:

Can be used wirelessly	✓
supports a remote smartphone	✓
has fast pairing	✕
has voice commands	✕
Has a radio	✕
Has voice prompts	✓
has a mute function	✕
works as a power bank	✕
has a sleep timer	✓

The speaker operates wirelessly and supports remote control via a smartphone, while also providing voice prompts and a sleep timer for added convenience. Fast pairing is not available, and the unit does not support voice commands, making it fully manual in terms of input. It cannot function as a power bank, has no built-in radio, and does not include a mute function.

Miscellaneous:

supports pairing for stereo sound	✓

The speaker supports stereo pairing, allowing two compatible units to be linked together for stereo sound playback.

Final Verdict

The Bose SoundLink Flex (2nd Gen) is a well-specified portable speaker built around practical outdoor use, with its IP67 water and dust resistance standing out as its most defining characteristic for users who need a reliable companion in demanding environments. Bluetooth 5.3 with multipoint support, a 12-hour battery, and stereo pairing capability give it a feature set that covers the essentials for everyday portable listening. Its limitations — mono output by default, a modest Bluetooth range, and the absence of any wired audio input — mean it is best suited to casual listeners who prioritize durability and convenience over audiophile-grade performance. For that intended use case, it delivers a focused and coherent package.