Wkzay SM-03 White Noise Machine with Sunrise Alarm

Wkzay SM-03 combines a white-noise machine with a sunrise alarm, bedside clock and night light. Its advertised 30 sounds, timer and adjustable lighting suit buyers wanting several sleep and wake-up functions in one bedside device, but the listing gives conflicting control ranges and dimensions.

At a glance

Advertises 30 sleep sounds, including noise variations and nature sounds.
Sunrise alarm is described as gradually brightening over 10–60 minutes.
Tactile controls and a display are advertised, with no Wi-Fi or app required.
A memory function is claimed for the last selected sound and light settings.

Price

$42.49Save 15%

Reference price: ~~$49.99~~

Price checked: 13 Nov 2026

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Pros and cons

Pros

Combines sound machine, alarm clock and night light in a single bedside device.
The advertised sound selection includes both noise types and nature sounds.
The listed sunrise interval and adjustable display brightness offer options for waking and nighttime use.

Technical specifications

23 specifications

Identity
Brand	Wkzay
Model	SM-03

Dimensions and installation
Dimensions listed	25.4 x 5.1 x 6.9 centimetres

Sound and alarm
Sleep sounds	30
Alarm tones	7 Built-in Alarm Tones
Time format	12 / 24 Hour Display
Snooze interval	9-Minute Snooze Interval
Speaker power	6W High-Quality Speaker
Volume settings	30 volume settings
Volume levels in specifications	16 Adjustable Levels
Sound level range	30 decibels to 110 decibels
Sound playback	Non-Looping Sleep Sounds

Light and display
Night-light brightness	13 brightness levels
Light brightness in specifications	5 Adjustable Levels
Light modes	Warm White, Cool White, Breathing Red, Green, Pink, Cycling Fade, Flowing Lights
Display dimmer in specifications	5-Level Adjustable Dimmer
Sunrise brightening interval	10-60 minutes

Timer and power
Sleep timer in feature listing	30 to 180 minutes
Sleep timer in specifications	Adjustable from 5 to 480 Minutes
Power input	AC 100–220V
Power output	5V / 2A
Power source	USB Powered
Battery listing	1 Nonstandard Battery batteries required. (included)

What to know before buying

Listing details to confirm

The listing gives inconsistent specifications: volume is described as 30 settings and 16 levels, light brightness as 13 levels and 5 levels, and the sleep timer as 30–180 minutes and 5–480 minutes. It also lists dimensions of 25.4 x 5.1 x 6.9 centimetres while another specification says 8.0 × 8.0 × 4.7 cm, and describes USB power alongside an included nonstandard battery. Confirm the selected listing's exact configuration and power arrangement before buying.

Who is it for?

A good fit for

People wanting a bedside sound machine, clock, alarm and night light in one device.
Parents or other sleepers seeking adjustable background sounds and bedtime lighting, subject to checking the light and volume controls.

Less suited to

Buyers who need a clearly confirmed timer, volume or light-level range before purchase.
Anyone who specifically needs app or Wi-Fi controls, which the listing says are not required and does not describe as supported.

Wkzay SM-03 White Noise Machine with Sunrise Alarm · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.3 / 5 · 347 ratings

5 stars68%68%
4 stars16%16%
3 stars6%6%
2 stars2%2%
1 star8%8%

Customer feedback highlights the soothing sounds, compact size and reported help with sleep, including a mention of use for babies. Some customers also like the display lighting and dimming options. Feedback is mixed on reliability, ease of use and bedtime lighting, with reports that the unit stopped working, instructions were confusing, or the light felt too bright. Those concerns matter for overnight use, where dependable controls and comfortable display brightness are important. The listing's claimed memory function and adjustable display do not establish that every customer will find setup or lighting satisfactory.

Positive themes

Customers describe the sounds as soothing and report that the device can help with sleep.
Customers appreciate its compact size and some like the display dimming options.

Negative themes

Some customers report that the device stopped working.
Some customers find the instructions confusing or the lighting too bright for bedtime.

Mixed feedback

Customer feedback is mixed on reliability, ease of use and lighting.

Frequently asked questions

How many sounds does the Wkzay SM-03 offer?

The title and feature listing advertise 30 sounds, including white, pink and brown noise variants and nature sounds. A separate specification section also describes 30 non-looping sleep sounds.

What timer range does the listing give?

It is inconsistent: one feature section says 30 to 180 minutes, while the specifications say 5 to 480 minutes. Confirm the range for the selected listing.

Does it include a sunrise alarm and night light?

The listing describes a sunrise alarm that brightens over 10–60 minutes and a night light. It gives conflicting night-light brightness ranges, so check which controls apply to the selected version.

Does it require an app or Wi-Fi?

The feature listing says no Wi-Fi or app is required and describes tactile-button controls.