Meet the Monster MD21: Your Bedtime Playlist Just Found a Better Fit

There’s a familiar moment at the end of a long day.
The lights are off. Your phone is finally done buzzing. You put on something relaxing, settle into your pillow—and suddenly, your earbuds are the least relaxing part of the evening.
Too bulky. Too noticeable. One more thing to adjust when you’re ready to unwind.
Meet the Monster MD21 Sleep Wireless Earbuds, our newest arrival designed for comfortable nighttime listening. With a miniature design, a soft in-ear fit, and Earjoy App support, the MD21 brings a more personal soundtrack to your bedtime routine.

Small Earbuds. A Softer Landing at the End of the Day.

The earbuds you reach for during a busy afternoon aren’t always the ones you want to wear when you’re lying down.
That’s where the Monster MD21 takes a different approach.
Its compact, lightweight design and soft in-ear fit are built with resting and nighttime listening in mind. The discreet profile keeps things simple, whether you’re relaxing on the couch or settling into bed.
Put on your favorite audio. Get comfortable. Let the evening slow down.

Your Bedtime Soundtrack, Beyond Another Playlist

Some nights call for music. Others call for the sound of rain and absolutely no lyrics.
Through the Earjoy App, the Monster MD21 gives you access to white noise, nature sounds, ASMR, and other relaxing soundscapes.
Think of it as choosing the atmosphere for your evening:

• White noise for a steady background sound.

• Nature sounds when you want a little escape from the day.

• ASMR for those who enjoy gentle, detailed listening.

• Other relaxing soundscapes when you feel like trying something different.

You don’t have to settle on one forever. Explore what feels right for tonight.

Make the Sound Your Own

Comfort is personal. Your sound preferences are, too.
The Earjoy App lets you adjust the MD21’s sound with Pop, Rock, Jazz, Classical, and Custom EQ modes.
Choose a preset for your favorite music, or explore the Custom mode to shape your listening experience.
A mellow evening playlist. A few familiar songs before bed. Something gentle while you read.
Your earbuds should fit the way you like to listen.

The Little Controls That Make Life Easier

Nobody wants a complicated setup at bedtime.
With the Monster MD21, Earjoy App support brings useful controls together in one place, letting you:

• Check battery status.

• Access the device-finding feature.

• Adjust EQ settings.

• Customize touch controls.

Check your settings before you settle in, then get back to the part you actually care about: enjoying your audio.

Three Colors for Your Nightstand

The Monster MD21 comes in Black, White, and Pink, each paired with a compact charging case.
Black keeps things understated.
White brings a clean, simple look.
Pink adds a softer touch of personality.
Keep the case beside your bed so your earbuds have a familiar place when your listening session ends.

Who Is the Monster MD21 For?

The MD21 Sleep Wireless Earbuds are worth a look if you:

• Enjoy music or relaxing audio as part of your bedtime routine.

• Prefer small, lightweight earbuds for listening while resting.

• Want white noise and nature sounds available through an app.

• Like having EQ settings and touch controls you can personalize.

Their focus is straightforward: comfortable nighttime listening, with more ways to make the experience your own.

Meet Your New Evening Companion

Your bedtime routine might be a book, a dim lamp, and a favorite album. It might be a few minutes of rain sounds after a day that felt a little too loud.
The Monster MD21 Sleep Wireless Earbuds are designed to fit into that moment—with a compact fit, relaxing sound options, and app controls that put your preferences first.
Ready to give your evening audio a new home?
Shop the New Monster MD21 Sleep Wireless Earbuds →