The CMF Speaker S is rated 3.4/5 for sound quality, #25 of 62 Small Size Portable Bluetooth Speakers. See all Portable Bluetooth rankings for every top pick.
Prices on this page were last checked October 26, 2026 at 11:06 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.
As an eBay Partner, we may be compensated if you make a purchase.
Brand: CMF
#25 CMF Speaker S: $49.00 Amazon $49.00 eBay
Same family: the CMF Speaker M (larger model, rated 3.3/5).
Pros: A compact, IP68 waterproof speaker with a solid feel, real physical controls, and an 18 hour battery that held up in testing at about 17 hours at half volume. A 45mm driver with two passive radiators gives more weight than its size suggests, and reviewers found it balanced rather than bright or boomy. Bluetooth 6.0 with Auracast Party Mode, Stereo Mode with a second unit, NFC tap to pair, dual device connection, and USB-C wired audio for a laptop. Custom EQ in the Nothing X app, plus a hanging loop and swappable panels and knob.
Cons: A single 10W driver limits bass impact and volume, so it suits a desk, bedroom, or close range listening outside rather than filling a larger room. Voices can sound thin at low volume. No charging cable in the box, no rubber bumpers to protect the plastic shell, and no LDAC or aptX.
Is the CMF Speaker S right for you?
Buy it if
- you want it outdoors, by the pool or in the shower (IP68).
- you want something light to carry (318 g).
Skip it if
- you want the best value: the higher-rated Tribit Stormbox Micro 2 costs about $14 less.
| Released | Oct 2026 (new) |
|---|---|
| Amplifier Power | 10W RMS |
| App | Yes (Nothing X) |
| Aux Input | No |
| Battery Life | 18 hours (Manufacturer specified) |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC, LC3 (Auracast only) |
| Bluetooth Version | 6.0 |
| Built-in Microphone | No |
| Charging Time | 2.5 hours |
| Digital Aux Input | Yes (USB-C audio) |
| Dimensions | 5.1” x 3.3” x 1.7” (130.5 x 85 x 44 mm) |
| Drivers | 1x 45mm full-range driver + 2x passive radiators |
| EQ | Yes (4 presets + custom) |
| Frequency Response | 70Hz - 20kHz (Manufacturer specified) |
| IP Rating | IP68 |
| Lights | No |
| MicroSD Playback | No |
| Omnidirectional | No |
| Party Mode | Yes (Auracast) |
| Power Bank | No |
| Power Input | USB-C |
| Stereo | No |
| Strap | Yes (built-in loop) |
| TWS | Yes (Stereo Mode) |
| Weight | 0.7 lbs (334 g) |
- Links
- Reviews, Comparisons and Sound Samples
Head-to-Head Comparisons
4 comparisons- CMF Speaker S vs JBL Clip 5
- CMF Speaker S vs JBL Go 5
- CMF Speaker S vs Tribit Stormbox Micro 3
- CMF Speaker S vs CMF Speaker M
No comparisons match that search.
Questions about the CMF Speaker S? Ask other owners on r/WirelessSpeakers.