Short answer: the Bose Soundlink Flex 2nd gen. It ranks #37 of 182 medium speakers by sound quality, rated 3.8/5, at $159; the Bose SoundLink Revolve (Series II) ranks #53, rated 3.6/5, and costs $194, so there is little reason to consider the other one.
The Bose Soundlink Flex 2nd gen is the tougher option. A small, rugged waterproof speaker with clear, well balanced mids, app EQ, aptX Adaptive and stereo pairing with a second unit. It is rated IP67 against IP55 for the Bose SoundLink Revolve (Series II). It charges over USB-C rather than Micro USB. The catch: 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.
Why pick the Bose SoundLink Revolve (Series II): A compact speaker that plays all around to fill a room, with a speakerphone mic and splash resistance. It keeps a wired aux input, which the Bose Soundlink Flex 2nd gen lacks. Watch for: RTINGS found it lacks low bass, so there’s little deep thump or rumble.
Buy the Bose Soundlink Flex 2nd gen. It is rated higher for sound quality than the Bose SoundLink Revolve (Series II) and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Still deciding? The full Portable Bluetooth rankings cover every ranked option.
Prices on this page were last checked November 14, 2026 at 6:17 PM 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.
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Specifications Side By Side
| Bose Soundlink Flex 2nd gen | Bose SoundLink Revolve (Series II) | |
|---|---|---|
| Price | $159.00 | $194.00 |
| Ranked | #37 of 182 in Medium Size Portable Bluetooth Speakers | #53 of 182 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Bose Connect |
| Battery Life | 12 hours (Manufacturer specified) | 13 hours (Manufacturer specified) |
| Built-in Microphone | Yes | Yes |
| EQ | Yes (3 band) | - |
| IP Rating | IP67 | IP55 |
| Party Mode | Yes (Bose Party mode) | - |
| Power Input | USB-C | Micro USB |
| Stereo | No | No |
| Omnidirectional | No | Yes |
| TWS | Yes | Yes |
| Weight | 1.3 lbs (586 g) | 1.5 lbs (680 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.3 | 4.1 |
| Dimensions | 7.9” x 3.5” x 2” (201 x 90 x 52 mm) | 6”H x 3.2”W x 3.2”D (152 x 82 x 82 mm) |
| Aux Input | No | Yes |
| Drivers | 60mm full-range driver with passive radiators | 1x full-range driver, 2x passive radiator |
| Bluetooth Codecs | SBC, AAC, aptX Adaptive | - |
| Digital Aux Input | No | - |
| Strap | Yes (built-in loop) | - |
Where the Ratings Come From
- Bose Soundlink Flex 2nd gen: reviews by Joy & Oluv’Sone, Oluv and Alan Ross.
- Bose SoundLink Revolve (Series II): reviews by Danny Pops, SoundGuys and RTINGS.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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