---
product_id: 650090912
title: "KASTWAVE Bluetooth 5.3 Wireless Sleep Earbuds - Discreet Mini Earphones for Side Sleepers, Perfect for Small Ears, Ideal for Work, Driving, and Workouts"
brand: "kastwave"
price: "¥4404"
currency: JPY
in_stock: true
url: https://www.desertcart.jp/products/650090912-kastwave-bluetooth-5-3-wireless-sleep-earbuds-discreet-mini-earphones
store_origin: JP
region: Japan
---

# Open-ear design for all-day comfort Crystal-clear stereo sound with deep bass Triangular shape ensures secure fit KASTWAVE Bluetooth 5.3 Wireless Sleep Earbuds - Discreet Mini Earphones for Side Sleepers, Perfect for Small Ears, Ideal for Work, Driving, and Workouts

**Brand:** kastwave
**Price:** ¥4404
**Availability:** ✅ In Stock

## Summary

> 🎧 Sleep, Work, Move—Seamless Sound, Zero Compromise

## Quick Answers

- **What is this?** KASTWAVE Bluetooth 5.3 Wireless Sleep Earbuds - Discreet Mini Earphones for Side Sleepers, Perfect for Small Ears, Ideal for Work, Driving, and Workouts by kastwave
- **How much does it cost?** ¥4404 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/650090912-kastwave-bluetooth-5-3-wireless-sleep-earbuds-discreet-mini-earphones)

## Best For

- kastwave enthusiasts

## Why This Product

- Trusted kastwave brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Comfort That Lasts:** Curved surface fits naturally for hours without discomfort.
- • **Discreet & Low-Profile:** Sleek, flat design blends seamlessly for work, driving, or relaxation.
- • **Stay Put, No Matter What:** Ergonomic triangular shape keeps earbuds stable during workouts or sleep.
- • **Freedom to Listen All Day:** Open-ear design lets you stay aware while enjoying your audio.
- • **Immersive Sound Experience:** Bluetooth 5.3 delivers crisp calls and rich music with deep bass.

## Overview

KASTWAVE Bluetooth 5.3 Wireless Sleep Earbuds feature an innovative open-ear design tailored for side sleepers and small ears. Their lightweight, triangular shape ensures a secure, comfortable fit for extended wear, while delivering high-quality stereo sound with deep bass. Perfectly discreet and stable, these earbuds are ideal for work, driving, workouts, and restful sleep.

## Description

KASTWAVE Bluetooth 5.3 Wireless Sleep Earbuds - Discreet Mini Earphones for Side Sleepers, Perfect for Small Ears, Ideal for Work, Driving, and Workouts

## Features

- 🎧 Innovative Open-Ear Design :Experience the freedom of our True Mini Wireless Earbuds, designed with a completely open-ear structure. This unique design allows the earbuds to rest gently and securely on top of your ears, providing a comfortable fit for extended wear.
- 🔒 Stable and Secure Fit :The thoughtfully crafted triangular shape ensures that the earbuds remain stable and are resistant to falling off, even during vigorous activities. Enjoy your music without the worry of losing your earbuds.
- 🌟 Comfortable Wear for All-Day Use :With a curved surface that naturally conforms to the shape of your ear, these earbuds provide a snug yet comfortable fit. You can wear them for hours without any discomfort, making them perfect for long listening sessions.
- 👂 Discreet and Low-Profile Design :The earbuds are designed to be discreet, lying flat against the side of your head without pressing on your ears. This low-profile design makes them ideal for use in any setting, whether at work or during leisure activities.
- 🔊 Enhanced Listening Experience :Enjoy high-quality sound with our stereo earbuds, which deliver clear audio and deep bass. Whether you're listening to music, taking calls, or enjoying podcasts, these earbuds provide an immersive listening experience.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | KASTWAVE |
| Package Dimensions | 14.7 x 12.8 x 3.6 cm; 80 g |
| Material | Plastic |
| Special Features | Lightweight |
| Item Weight | 80 g |

## Images

![KASTWAVE Bluetooth 5.3 Wireless Sleep Earbuds - Discreet Mini Earphones for Side Sleepers, Perfect for Small Ears, Ideal for Work, Driving, and Workouts - Image 1](https://m.media-amazon.com/images/I/61UGXOtiG3L.jpg)

## Frequently Bought Together

- KASTWAVE Bluetooth 5.3 Wireless Sleep Earbuds - Discreet Mini Earphones for Side Sleepers, Perfect for Small Ears, Ideal for Work, Driving, and Workouts
- Soundcore by Anker A25i True Wireless Earbuds • Bluetooth 5.3 • App • Customized Sound • 28H Long Playtime • Water-Resistant • 2 Mics for AI Clear Calls • Single Earbud Mode

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**Shop now:** [https://www.desertcart.jp/products/650090912-kastwave-bluetooth-5-3-wireless-sleep-earbuds-discreet-mini-earphones](https://www.desertcart.jp/products/650090912-kastwave-bluetooth-5-3-wireless-sleep-earbuds-discreet-mini-earphones)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-05-10*