SANMIC K400 150W Portable PA Speaker with Two Wireless Microphones

The SANMIC K400 is a battery-powered portable PA speaker listed with 150 watts of output and two wireless handheld microphones. Bluetooth, USB and AUX inputs suit music playback alongside voice use, while the listing claims 5–6 hours of speaker use and up to 12 hours per microphone. Those runtime figures are manufacturer claims, not independently verified measurements.

At a glance

The listing specifies two wireless handheld microphones and says both can work simultaneously.
Bluetooth, USB and AUX are listed for playback connectivity.
The speaker is described as having a built-in 5000mAh battery with 5–6 hours of continuous use. Each microphone is listed with a 1800mAh rechargeable battery and up to 12 hours of use.
The manufacturer claims IPX6 waterproof protection and a voice-amplifier mode.

Price

$279.20Save 20%

Reference price: ~~$349.00~~

Price checked: Nov 12, 2026

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Pros and cons

Pros

Two handheld wireless microphones are listed, with the manufacturer stating they can be used simultaneously.
Battery power and Bluetooth, USB and AUX inputs support use without relying on a single wired playback connection.
The stated microphone range is up to 65 ft, which may help when a presenter or singer needs room to move.

Technical specifications

11 specifications

Identity
Brand	SANMIC
Model	K400
Color	Black

Audio
Listed output wattage	150 watts
Audio input	Microphone

Connectivity and controls
Connections listed	AUX, Bluetooth, UHF, USB, Wireless
Connector type	Aux, USB
Compatible devices	Smartphone, iPhone

Power and battery
Power configuration	Battery Powered

Dimensions and installation
Mounting type listed	Floor Standing

Construction
Enclosure material	IPX6 Waterproof, Plastic

What to know before buying

The listing claims 150W output, but does not specify a measurement standard or conditions. Battery runtimes, IPX6 protection, microphone range and simultaneous microphone operation are also manufacturer claims, not independently verified specifications. Confirm the details for the selected listing if they are decisive for your use.

What’s in the box

Included

K400 speaker
2-in-1 charging cable
Audio cable
Type-C charging cable
2 wireless handheld microphones

Who is it for?

A good fit for

Karaoke, presentations, classes or small events where two handheld microphones and music playback are useful.
Buyers wanting a battery-powered PA speaker with Bluetooth and wired AUX or USB options.

Less suited to

Buyers who need independently verified output, runtime or water-resistance performance.
Buyers requiring a specified runtime longer than the listing's claimed 5–6 hours for the speaker.

SANMIC K400 150W Portable PA Speaker with Two Wireless Microphones · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 27 ratings

5 stars56%56%
4 stars33%33%
3 stars11%11%
2 stars0%0%
1 star0%0%

Aggregate ratings lean positive, with five- and four-star ratings making up most of the distribution and some three-star ratings also present. This offers only a limited signal about overall satisfaction and does not identify specific customer-perceived strengths or problems. It does not verify the listing's output, battery-life, range or water-resistance claims.

Frequently asked questions

Can both wireless microphones be used at the same time?

The manufacturer says the K400 supports two wireless microphones working simultaneously. Treat this as a listing claim rather than an independently verified result.

What connections are listed for playback?

The specifications list Bluetooth, USB and AUX. The connector type is given as Aux and USB.

How long does the battery last?

The listing claims 5–6 hours of continuous use for the speaker. It separately claims up to 12 hours for each microphone. Actual runtime is not independently verified.

What is the claimed wireless microphone range?

The manufacturer lists a range of up to 65 ft. Performance may depend on conditions, and the figure is not independently verified.