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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 6.39 lb — 5.09 lb less to carry. Its recorded reference price is $250.95 lower.
JBL
A larger speaker for outdoor gatherings, with a shoulder strap, phone charging and ambient lighting. IP68 protection suits outdoor use; its 6.39 lb weight is the carrying tradeoff.
Bettr Score
66.1/100
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
| JBL Xtreme 5 | Specification | Bose SoundLink Flex Portable Speaker (2nd Gen) |
|---|---|---|
$399.95 | Reference price | $149 ✓ Winner |
28 hours ✓ Winner | Advertised battery life | 12 hours |
6.39 lb | Weight | 1.3 lb ✓ Winner |
IP68 | Ingress protectionPersonal preference | IP67 |
5 ✓ Winner | Durability tier | 4 |
6.0 | Bluetooth versionPersonal preference | 5.3 |
Yes ✓ Winner | Can charge another device | No |
Yes ✓ Winner | USB audio input | No |
Yes ✓ Winner | Auracast or compatible broadcast pairing | No |
No | Floats in water | Yes ✓ Winner |
No | Speakerphone | Yes ✓ Winner |
The buying advice
Choose JBL Xtreme 5 if a longer advertised playtime matters. JBL Xtreme 5 advertises up to 28 hours with Playtime Boost, versus up to 12 hours for Bose SoundLink Flex Portable Speaker (2nd Gen).
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 6.39 lb — 5.09 lb less to carry.
JBL Xtreme 5 advertises up to 28 hours with Playtime Boost, 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 6.39 lb — 5.09 lb less to carry. The recorded reference-price difference is $250.95.
JBL Xtreme 5 advertises up to 28 hours with Playtime Boost, 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 6.39 lb — 5.09 lb less to carry.
JBL Xtreme 5 can charge another device from its battery; the other speaker’s verified specification says it cannot. Charging a phone uses some of the speaker’s battery.
JBL Xtreme 5 supports USB audio input; the other speaker’s verified specification says it does not. Check source-device compatibility.
People's Pick
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eBay — New
In stock · checked Oct 30, 2026
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$229.99
Item + shipping · before tax
$229.99 + $0.00 shipping
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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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