CMF BY NOTHING Speaker S E494, 10W portable Bluetooth speaker

E494: CMF BY NOTHING Speaker S is a compact portable speaker with a 45mm full-range driver and claimed 10W output. It combines Bluetooth and NFC pairing with USB-C audio, an advertised 18-hour playback figure at under 50% volume, and IP68 dust and water resistance.

At a glance

A 45mm full-range driver, dual passive radiators and claimed 10W RMS output are intended for a small portable format.
Advertised playback is 18 hours at under 50% volume, with a claimed full recharge time of approximately 2.5 hours.
Bluetooth 6.0 and NFC pairing are listed. USB-C audio is promoted for low-latency desktop use.
The manufacturer claims IP68 dust and water resistance and submersion up to 1.5m for up to 30 minutes.
The listing describes pairing two Speaker S units for left-right stereo and compatible-speaker linking with Auracast Party Mode.

Price

£39.00Save 20%

Reference price: ~~£49.00~~

Price checked: 12 Nov 2026

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Pros and cons

Pros

The compact listed dimensions and 334g weight suit carrying between locations.
NFC pairing and dual-device connection claims may make switching between a phone and laptop more convenient.
USB-C audio offers a wired alternative for desktop video and gaming, with a stated latency of 60ms.
The 18-hour playback claim specifies listening below 50% volume rather than implying the same duration at louder settings.

Cons

At 10W output, this is positioned as a compact personal or small-gathering speaker rather than a high-output room-filling system.

Technical specifications

24 specifications

Identity
Brand	CMF BY NOTHING
Model	E494
Speaker type	Portable Bluetooth Speaker
Colour	White

Audio
Maximum output power	10 Watts
Audio output mode	Stereo
Number of audio channels	2.0
Driver type	Dynamic Driver
Driver size	45 Millimetres
Frequency response	20 KHz

Connectivity and controls
Wireless connection listed	Bluetooth, NFC, USB
Control methods listed	Touch
Bluetooth version	Bluetooth 6.0
USB-C audio latency claim	60ms

Power and battery
Power configuration	Battery Powered
Battery playback claim	18 hours of music playback at under 50% volume
Full charging time claim	approximately 2.5 hours
Quick charge claim	a 10-minute charge provides up to 1 hour of playback
Input voltage	5 Volts

Dimensions and installation
Dimensions	85D x 45W x 132H millimetres
Weight listed	334 Grams

Materials and protection
Material listed	Acrylonitrile Butadiene Styrene (ABS), Polycarbonate (PC)
Dust and water resistance claim	IP68
Submersion claim	up to 1.5m of water for up to 30 minutes

What to know before buying

Listing details to confirm

Playback time is a manufacturer claim conditioned on volume below 50%. Water resistance and submersion limits are also manufacturer claims, not independently verified here. The specifications list touch controls, while the manufacturer feature copy describes a physical knob and dedicated buttons, so the control arrangement is unclear. Bluetooth, NFC and USB are listed generally, while feature copy specifies USB-C audio. Confirm the desired connection and control details before buying.

What’s in the box

Included

Safety information
Warranty information
Speaker

Who is it for?

A good fit for

Listeners wanting a compact speaker for travel, outdoor use or a desk, with a claimed IP68 rating.
Buyers who want Bluetooth or NFC pairing and the option of USB-C wired audio.
People interested in linking two identical units for a left-right stereo setup, or compatible Auracast speakers for party playback.

Less suited to

Anyone needing strong output for a large room or a loud event.
Buyers who require confirmed operating time at high volume or independently verified water-resistance performance.

CMF BY NOTHING Speaker S E494, 10W portable Bluetooth speaker · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.8 / 5 · 13 ratings

5 stars90%90%
4 stars0%0%
3 stars10%10%
2 stars0%0%
1 star0%0%

The supplied ratings are mostly five-star, with a smaller three-star share, but the sample is limited and no written feedback is available. The ratings do not identify what customers liked or disliked. For buyers considering this compact 10W speaker, they offer only a cautious overall signal, not evidence about battery life, sound quality or water resistance.

Frequently asked questions

How long is the claimed battery life?

The manufacturer claims 18 hours of music playback at under 50% volume. The listing does not state an equivalent runtime at higher volume.

Can it be used for stereo playback?

The listing says two identical Speaker S units can be paired for dedicated left and right channels. This describes a two-speaker setup, not stereo separation from one unit.

Is it waterproof?

The manufacturer claims IP68 dust and water resistance and says it can withstand submersion up to 1.5m for up to 30 minutes. These claims are not independently verified here.

Can it connect to a computer by cable?

The feature copy describes USB-C audio for desktop use and claims 60ms latency. Check that your device and chosen cable support the intended audio connection.