# CMF BY NOTHING Speaker S Portable Bluetooth Speaker, 45mm Driver

CMF BY NOTHING Speaker S is a compact portable Bluetooth speaker with a 45mm full-range driver and claimed 10W RMS output. Its IP68 dust and water resistance, USB-C audio connection, and stated playback of up to 18 hours at under 50% volume suit portable listening, with the runtime condition important for trip planning.

- [Original product page](https://best-deals.pro/product/cmf-by-nothing-speaker-s-portable-bluetooth-speaker)
- [View offer](https://best-deals.pro/visit/cmf-by-nothing-speaker-s-portable-bluetooth-speaker)
- Market: US
- Language: en-US
- Currency: USD
- Brand: CMF BY NOTHING
- Model: CMF Speaker S
- Category: Electronics > Speakers & Soundbars > Speakers
- Price: 39.00 USD
- Previous price: 59.00 USD
- Discount: 34%
- Price checked: 2026-11-14T06:15:11.762Z
- Rating: 4.6 / 5
- Reviews: 15

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Manufacturer claims IP68 dust and water resistance and submersion up to 1.5m for up to 30 minutes.
- Claimed playback is up to 18 hours at under 50% volume. A 10-minute charge is said to provide up to 1 hour, with a full USB-C charge taking approximately 2.5 hours.
- Bluetooth 6.0 is listed with a stated range up to 100m in free space. USB-C audio is claimed to have 60ms latency.
- The Nothing X app offers sound presets and Custom EQ, according to the listing.
- Stereo Mode requires pairing two identical speakers. Auracast Party Mode is described for compatible speakers.

## Pros

- Small stated dimensions and 334 g listed weight make the speaker easier to carry than a larger tabletop unit.
- USB-C audio offers a wired option for compatible devices, with the listing claiming 60ms latency for gaming and video.
- IP68 protection and the integrated attachment point described in the listing support outdoor and carry-along use.
- App EQ options and physical controls provide more than one way to adjust playback.

## Cons

- The listed maximum output is 10 watts, which may not suit buyers seeking high output for a large gathering.
- The 18-hour playback claim applies at under 50% volume, so it should not be treated as a guaranteed runtime at louder settings.
- Creating left and right stereo channels requires a second identical speaker.

## Specifications

### Identity and audio
- Brand: CMF BY NOTHING
- Model: CMF Speaker S
- Driver type: Dynamic Driver
- Driver size: 45 millimeters
- Maximum output power: 10 watts
- Frequency response: 20 KHz
- Audio output mode: Stereo
- Number of audio channels: 2
- Speaker type: Multimedia
### Connectivity and controls
- Wireless connection listed: Bluetooth, USB
- Wireless technology: Bluetooth
- Control methods listed: App, Push Button
- Compatible devices: Laptop, Smartphone
- Audio latency: 60 milliseconds
- Maximum range: 100 meters
### Power and battery
- Power configuration: Battery Powered
- Battery information listed: 1 Nonstandard Battery batteries required. \(included\)
- Input voltage: 5 volts
### Dimensions and installation
- Mounting types listed: Tabletop Mount
- Dimensions: 3.34"D x 5.13"W x 1.73"H
- Weight: 334 g
- Speaker size: 1.75 inches
### Materials and protection
- Enclosure materials: Acrylonitrile Butadiene Styrene \(ABS\), Polycarbonate \(PC\)
- Water resistance listed: Waterproof
- Additional features listed: Bass Boost, Dustproof, Stereo Pairing, USB Port, Waterproof
- Color: Turquoise
### Warranty
- Warranty type: Limited
- Warranty description: 1 Year Manufacturer

## Before you buy

- Battery life is claimed at under 50% volume. The manufacturer also states submersion up to 1.5m for up to 30 minutes. Treat these as stated operating conditions, not independent test results. Bluetooth range is specified for free space.

## In the box

- Safety information (Included)
- Warranty information and user guide × 1 (Included)
- Speaker × 1 (Included)

## A good fit for

- Listeners wanting a compact speaker for travel, desk use, or small outdoor outings.
- Buyers who want USB-C audio as an alternative to Bluetooth, including for gaming or video.
- People who value dust and water protection and may later pair a second identical speaker for left-right stereo.

## Less suited to

- Buyers needing a high-output speaker for large spaces or loud parties.
- Anyone expecting the claimed 18-hour playback at unrestricted volume.
- Shoppers who want stereo left-right playback from a single unit.

## Customer feedback

Aggregate ratings skew positive, with most ratings in the five-star category, alongside some three-star ratings. The sample is small and does not explain why people rated the speaker as they did. These figures alone cannot establish sound quality, durability, or battery performance. For buyers weighing those claims, the 10-watt listed output and volume-conditioned runtime are more useful concrete limits to consider.

## Frequently asked questions

### How long does the CMF Speaker S battery last?
The manufacturer claims up to 18 hours of music playback at under 50% volume. Runtime at other volume levels is not specified here.
### Can one Speaker S create stereo left and right channels?
The listed Stereo Mode pairs two identical CMF Speaker S units to provide dedicated left and right channels.
### Can it connect by cable?
The listing identifies USB connectivity and describes USB-C audio, including a claimed 60ms latency. Confirm that your source device supports compatible USB-C audio.
### What water protection is claimed?
The manufacturer claims IP68 dust and water resistance and says the speaker can withstand submersion up to 1.5m for up to 30 minutes.

## Alternative options

- [Monster Shock Portable Bluetooth Speaker, True Wireless Speaker, 30W Loud Stereo Sound, IPX6 Waterproof Speaker,17 Hours Playback,Outdoor Speakers for Travel & Gifts](https://best-deals.pro/visit/monster-s330-computer-soundbar-bluetooth-speaker)
- [Monster S360 Portable Bluetooth Speaker, IPX7 Waterproof, Bluetooth 6.0, 20H Playtime, Powerful Stereo Sound, Support TF Card, Clear Hands-Free Calling Speaker for Home, Outdoors and Travel](https://best-deals.pro/visit/monster-s360-portable-bluetooth-speaker)
- [OHAYO Portable Bluetooth Speaker Wireless, 35W Loud, IPX7 Waterproof, Black \| 24-Hour Playtime, USB-C Lossless Audio, Active Bass, Bluetooth 5.3, LED Lights, TWS Pairing, Home/Outdoor Use, Birthday Gift](https://best-deals.pro/visit/ohayo-x10max-portable-bluetooth-speaker)
- [W-KING Portable Bluetooth Speaker, 120W Peak Loud Bass Boombox Outdoor \| 70W Subwoofer, Stereo Pair, Deep Bass, 4 Drivers, IPX6, BT5.4, EQ, 42H, RGB, TF, Wireless Outdoor Speaker, 110dB Party Music](https://best-deals.pro/visit/w-king-d10-portable-bluetooth-speaker)
- [Tribit StormBox Micro 3 Portable Bluetooth Speaker, 13W, IP68 Waterproof \| Bike Speaker, BT6.0, 24H Playtime, Magnetic & Strap, XBass, Custom EQ, Wireless, TWS Pairing, Outdoor, Home, Cycling, Black](https://best-deals.pro/visit/tribit-stormbox-micro-3-portable-bluetooth-speaker)
- [30W Portable Bluetooth Speaker, Deep Bass, IPX6 Waterproof, LED Lights \| 30W stereo sound, IPX6 water resistance, dual white/warm lights, 12-hour playtime, wireless stereo pairing, hands-free calls.](https://best-deals.pro/visit/comiso-m16-portable-bluetooth-speaker)
- [2.4G Wireless TV Speaker, Bluetooth Speaker for TV, Clear Voice for Seniors \| TV & ...](https://best-deals.pro/visit/cmf-by-nothing-speaker-s-portable-bluetooth-speaker)
- [Elgin Discord Gen 3 Bluetooth Earplug Earbuds, 31 dB NRR Hearing Protection \| OSHA compliant work earbuds, noise cancelling mic, 14 hour battery, IP65 sweatproof, for shooting, construction, and mowing](https://best-deals.pro/visit/cmf-by-nothing-speaker-s-portable-bluetooth-speaker)
- [Teufel Fender x ROCKSTER GO 2 Portable Bluetooth Speaker \| Powerful Sound, Rugged, Waterproof, 28 Hour Battery, Carrying Strap for Outdoors and Travel](https://best-deals.pro/visit/cmf-by-nothing-speaker-s-portable-bluetooth-speaker)
- [YanMing 2-in-1 Magnetic Split Bluetooth Speaker, 30W Loud Portable Wireless Speaker BT5.4 with Deep Bass, IPX6 Waterproof, 24H Playtime, TWS Pairing, for Camping Beach Party Home Outdoor Travel](https://best-deals.pro/visit/cmf-by-nothing-speaker-s-portable-bluetooth-speaker)
- [2 in 1 Magnetic Splittable Bluetooth Speaker, Portable IPX6 Waterproof Split Wirele...](https://best-deals.pro/visit/cmf-by-nothing-speaker-s-portable-bluetooth-speaker)
- [Upgraded Magnetic Bluetooth Speaker, PRO Version, IP68 Waterproof, All-Aluminum Bod...](https://best-deals.pro/visit/cmf-by-nothing-speaker-s-portable-bluetooth-speaker)

## Images

![CMF BY NOTHING Speaker S Portable Bluetooth Speaker, 45mm Driver — 1](https://best-deals.pro/i/aH8v7X3dwBYjKbD0aqSfFZKcJFENnJIKuqjrC9Oa8ETBizaaJi0neCVCUah4GNCfBZpiLoQ8NzBsaQrQWlNyxWKN7JTHRHAk5y55e3WaCYLgQ94xWLeqiX0a.jpg)

![CMF BY NOTHING Speaker S Portable Bluetooth Speaker, 45mm Driver — 2](https://best-deals.pro/i/RNTLEXOf8IklVcWA_iAcAUfPy8LlF_mgcrMETyvcmOF60LCBQs6SiNJTDugUkppkGK7nlkKdL51WtRS40uvjiVTPh0HtAV1kEYHE55VCXPkCvL6Y89K4GPwr.jpg)

![CMF BY NOTHING Speaker S Portable Bluetooth Speaker, 45mm Driver — 3](https://best-deals.pro/i/Ta2a6o0XmMFTeC64H5YjunNXcCRgn4ByTejY2ET7gKQo7ADfVwzrIZ1TUxVuuUs8RrjuAJG90HaSklSZrxaqTNnMypL1beecoDrVj-337yjsLu_abrHLpFbv.jpg)

![CMF BY NOTHING Speaker S Portable Bluetooth Speaker, 45mm Driver — 4](https://best-deals.pro/i/f6vAyxmqJNZt1gX00lzvVDT1ztQmpZ0shFuWOhl1QSy24uCpl5_SmY8yGy6pBQ2cbHTVSFuQsmhKtJRiVmwvxsHDnSj8ZshCovdfQRDmr_jvl_T1UxGVjNUd.jpg)

![CMF BY NOTHING Speaker S Portable Bluetooth Speaker, 45mm Driver — 5](https://best-deals.pro/i/KIEJMrrZ4j2Zltw2pih2D6fg5fEWCg3jYrqZK6n4bjHp9sCv6_UUTFxJav-xk9eiefnaN3aut_LZ3z7cXayLD0SeXPijz0ByXEzyOJPsxnRWTbNDjBXL554m.jpg)

![CMF BY NOTHING Speaker S Portable Bluetooth Speaker, 45mm Driver — 6](https://best-deals.pro/i/s-Q1aO906zqC9Z0lZobUTOxyHgqDCJPD8eb2TbRQYVi5xR8f0C3zke-Ij42IbXG-x_w-36A_kb_t8sZv92hAPE8C-dw_Je5LOwaB1RxieJuhxbjhr-94TqGq.jpg)

![CMF BY NOTHING Speaker S Portable Bluetooth Speaker, 45mm Driver — 7](https://best-deals.pro/i/KgY331Rb60sxpklgqYuaNDVpgzOGNVuFdQXDraUxxvpf3Lo-hrXlqmf_m2jvlxNlqxuecvlwrkEnBIOEWoL3p2wmzvUu_bOKLzbTMf3dmLLmqDyiI9VEJIPD.jpg)