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The short answer
Bose SoundLink Flex Portable Speaker (2nd Gen) wins this comparison. Choose it if you want less weight in your bag. Bose SoundLink Flex Portable Speaker (2nd Gen) weighs 1.3 lb versus 1.48 lb — 2.82 oz less to carry. Its recorded reference price is $30.99 lower.
Bose
A compact speaker that floats and adjusts its sound when you change its position. IP67 protection and a built-in microphone suit outdoor listening and hands-free calls.
Bettr Score
82/100
Marshall
360° sound and 32+ hours of playtime in a 1.48 lb speaker. IP67 protection makes it useful for beach bags and weekend trips, with a microphone for hands-free calls.
Bettr Score
64.1/100
| Bose SoundLink Flex Portable Speaker (2nd Gen) | Specification | Marshall Emberton III |
|---|---|---|
$149 ✓ Winner | Reference price | $179.99 |
12 hours | Advertised battery life | 32 hours ✓ Winner |
1.3 lb ✓ Winner | Weight | 1.48 lb |
IP67 | Ingress protectionTie | IP67 |
4 | Durability tierTie | 4 |
5.3 | Bluetooth versionTie | 5.3 |
No | Can charge another deviceNot enough data | Not stated / not applicable |
No | USB audio inputNot enough data | Not stated / not applicable |
No | Auracast or compatible broadcast pairingNot enough data | Not stated / not applicable |
Yes | Floats in waterNot enough data | Not stated / not applicable |
Yes | SpeakerphoneTie | Yes |
The buying advice
Choose Bose SoundLink Flex Portable Speaker (2nd Gen) if you want less weight in your bag. Bose SoundLink Flex Portable Speaker (2nd Gen) weighs 1.3 lb versus 1.48 lb — 2.82 oz less to carry.
Choose Marshall Emberton III if a longer advertised playtime matters. Marshall Emberton III advertises up to 32 hours, versus up to 12 hours for Bose SoundLink Flex Portable Speaker (2nd Gen).
Bose SoundLink Flex Portable Speaker (2nd Gen) weighs 1.3 lb versus 1.48 lb — 2.82 oz less to carry. Marshall Emberton III advertises up to 32 hours, versus up to 12 hours for Bose SoundLink Flex Portable Speaker (2nd Gen). The recorded reference-price difference is $30.99.
Bose SoundLink Flex Portable Speaker (2nd Gen) weighs 1.3 lb versus 1.48 lb — 2.82 oz less to carry.
Marshall Emberton III advertises up to 32 hours, versus up to 12 hours for Bose SoundLink Flex Portable Speaker (2nd Gen).
Bose SoundLink Flex Portable Speaker (2nd Gen) has the lower recorded reference price: $149.00 versus $179.99, a $30.99 difference.
People's Pick
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eBay — New
In stock · checked Oct 30, 2026
Price needs rechecking. Confirm at the retailer.
$94.99
Item price · shipping unknown
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eBay — New
In stock · checked Oct 30, 2026
Price needs rechecking. Confirm at the retailer.
$139.99
Item + shipping · before tax
$139.99 + $0.00 shipping
We may earn a commission when you buy through links marked “Affiliate link.” This does not change your price or our scores. How we earn
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