Bose Soundlink Flex 2nd gen vs Bogasing M5

Last updated: September 16, 2026

Short answer: the Bose Soundlink Flex 2nd gen if sound quality matters most, the Bogasing M5 if price matters most. The Bose Soundlink Flex 2nd gen ranks #35 of 142 medium speakers at $159. The Bogasing M5 ranks #55 at $45.59, $113.41 cheaper.

Bose Soundlink Flex 2nd gen vs Bogasing M5

Short answer: the Bose Soundlink Flex 2nd gen, rated 3.8 against the Bogasing M5’s 3.5. The Bose Soundlink Flex 2nd gen offers a very portable 586g, IP67-rated speaker with a clear, well-balanced midrange that keeps voices and instruments intelligible. The Bogasing M5 offers compact enough for a backpack side pocket at under 1.7 lb.

Choose the Bose Soundlink Flex 2nd gen for a very portable 586g: Watch for: one Flex remains mono and cannot deliver genuine low-bass rumble; RTINGS also found the elevated treble can turn hi-hats and other high-frequency detail piercing. It costs more too, at $159.00 against $45.59.

Choose the Bogasing M5 for compact enough for a backpack side pocket at under 1.7 lb: Watch for: front/rear driver configuration. It’s also the cheaper of the two, at $45.59 against $159.00.

Buy the Bose Soundlink Flex 2nd gen when sound quality outweighs the price for you, and the Bogasing M5 when the price outweighs sound quality instead.

There is a real battery-life gap here: the Bogasing M5 is rated for 30 hours, the Bose Soundlink Flex 2nd gen only 12 hours.

Want more options? Browse the full Portable Bluetooth rankings.

Buy the Bose Soundlink Flex 2nd gen at Amazon ($159.00) →Buy the Bogasing M5 at Amazon ($45.59) →

Specifications Side By Side

Bose Soundlink Flex 2nd gen Bogasing M5
Price$159.00$45.59
Ranked#35 of 142 in Medium Size Portable Bluetooth Speakers#55 of 142 in Medium Size Portable Bluetooth Speakers
AppYes-
Battery Life12 hours (Manufacturer specified)30 hours (Manufacturer specified)
Built-in MicrophoneYes-
EQYes (3 band)-
IP RatingIP67IPX7
Party ModeYes (Bose Party mode)-
Power InputUSB-C-
StereoNoNo (front/rear drivers)
OmnidirectionalNoYes
TWSYesYes
Weight1.3 lbs (586 g)1.7 lbs (757 g)
Bluetooth Version5.35.3
Dimensions7.9" x 3.5" x 2" (201 x 90 x 52 mm)6.3" x 3" x 2.8" (160 x 76 x 71 mm)
Aux InputNoYes
Drivers60mm full-range driver with passive radiators30W system
Bluetooth CodecsSBC, AAC, aptX AdaptiveSBC (inferred; additional codecs unverified)
Digital Aux InputNoNo
Bass Extension (-10dB)-61Hz
Maximum SPL-96dB (measured by Alan Ross Reviews)
MicroSD Playback-Yes
Power Bank-Yes (USB-A)
USB Playback-Yes
Frequency Response-50Hz - 20kHz (Manufacturer specified)
Amplifier Power-40W
Buy the Bose Soundlink Flex 2nd gen at Amazon ($159.00) →Buy the Bogasing M5 at Amazon ($45.59) →

How Bose Soundlink Flex 2nd gen compares with other leading options:

Prices on this page were last checked September 16, 2026 at 12:41 AM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.

As an eBay Partner, we may be compensated if you make a purchase.

The Two Speakers In Full

Bose Soundlink Flex 2nd gen ranking card

Pros: A very portable 586g, IP67-rated speaker with a clear, well-balanced midrange that keeps voices and instruments intelligible. The second generation adds a Bose app with 3-band EQ, better-placed controls and stereo pairing with another Bose Soundlink Flex 2nd gen. It supports AAC and aptX Adaptive in addition to SBC, making it a stronger wireless option than most small rivals.

Cons: One Flex remains mono and cannot deliver genuine low-bass rumble; RTINGS also found the elevated treble can turn hi-hats and other high-frequency detail piercing. The claimed battery life is only 12 hours, and some owners report accelerated standby drain after firmware updates. It is expensive for its size, so the added app and codec support, not a transformational sound upgrade over the original, are the main reasons to choose it.

Full Bose Soundlink Flex 2nd gen review and specifications →

AppYes
Aux InputNo
Battery Life12 hours (Manufacturer specified)
Bluetooth CodecsSBC, AAC, aptX Adaptive
Bluetooth Version5.3
Built-in MicrophoneYes
Digital Aux InputNo
Dimensions7.9" x 3.5" x 2" (201 x 90 x 52 mm)
Drivers60mm full-range driver with passive radiators
EQYes (3 band)
IP RatingIP67
OmnidirectionalNo
Party ModeYes (Bose Party mode)
Power InputUSB-C
StereoNo
TWSYes
Weight1.3 lbs (586 g)
Check current price at Amazon ($159.00) →Search eBay for Bose Soundlink Flex 2nd gen →

Bogasing M5: $45.59 Amazon eBay

Bogasing M5 ranking card

Pros: Compact enough for a backpack side pocket at under 1.7 lb. Up to 30 hours of battery life. USB-C charging - no proprietary cable to lose. Measured bass extension of 61Hz (-10dB).

Cons: Front/rear driver configuration. Use bass mode for the flattest response. Sounds thin in the midrange. Hot treble and rolled off bass in default mode. Treble a bit rolled off in bass mode.

Full Bogasing M5 review and specifications →

Amplifier Power40W
Aux InputYes
Bass Extension (-10dB)61Hz
Battery Life30 hours (Manufacturer specified)
Bluetooth CodecsSBC (inferred; additional codecs unverified)
Bluetooth Version5.3
Digital Aux InputNo
Dimensions6.3" x 3" x 2.8" (160 x 76 x 71 mm)
Drivers30W system
Frequency Response50Hz - 20kHz (Manufacturer specified)
IP RatingIPX7
Maximum SPL96dB (measured by Alan Ross Reviews)
MicroSD PlaybackYes
OmnidirectionalYes
Power BankYes (USB-A)
StereoNo (front/rear drivers)
TWSYes
USB PlaybackYes
Weight1.7 lbs (757 g)
Check current price at Amazon ($45.59) →Search eBay for Bogasing M5 →