Short answer: the Bose Soundlink Flex. It ranks #38 of 182 medium speakers by sound quality, rated 3.8/5, at $79.99; the Bose SoundLink Revolve (Series II) ranks #53, rated 3.6/5, and costs $194, which makes this an easy call rather than a real tradeoff.
The Bose Soundlink Flex is the tougher option. A small, rugged waterproof speaker that survives drops and floats, with a warm, bass forward sound for casual outdoor use. It is rated IP67 against IP55 for the Bose SoundLink Revolve (Series II). It charges over USB-C rather than Micro USB. The tradeoff: Warm sounding with overly boosted bass which drowns out midrange detail.
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 lacks. The catch: RTINGS found it lacks low bass, so there’s little deep thump or rumble.
Buy the Bose Soundlink Flex. It is rated higher for sound quality than the Bose SoundLink Revolve (Series II) and costs less, which makes it the one to get unless you need something the other one does better.
Looking for alternatives? See the complete Portable Bluetooth rankings.
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 | Bose SoundLink Revolve (Series II) | |
|---|---|---|
| Price | $79.99 | $194.00 |
| Ranked | #38 of 182 in Medium Size Portable Bluetooth Speakers | #53 of 182 in Medium Size Portable Bluetooth Speakers |
| App | Yes | Bose Connect |
| Bass Extension (-10dB) | 56Hz | - |
| Battery Life | 12 hours (Manufacturer specified) | 13 hours (Manufacturer specified) |
| Built-in Microphone | Yes | Yes |
| EQ | No | - |
| IP Rating | IP67 | IP55 |
| Bluetooth Latency | 33ms | - |
| Maximum SPL | 96dB (measured by Alan Ross Reviews) | - |
| 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 (589 g) | 1.5 lbs (680 g) |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 4.2 | 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) |
| Drivers | 1x 60mm full-range driver + 2x passive radiators | 1x full-range driver, 2x passive radiator |
| Digital Aux Input | No | - |
| Bluetooth Codecs | SBC | - |
| Aux Input | No | Yes |
| Strap | Yes (built-in loop) | - |
Watch Them Compared
Videos and reviews that test both speakers side by side.
Where the Ratings Come From
- Bose Soundlink Flex: 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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