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| Specification | Details |
|---|---|
| Model | D21 |
| Connection Type | Wired, 3.5mm audio jack |
| Driver Unit | 10mm dynamic driver |
| Sound Profile | Heavy bass, stereo sound |
| Frequency Response | 20Hz–20kHz |
| Microphone | In-line HD microphone |
| Control | In-line remote: Play/Pause, Answer Calls, Mic |
| Cable Length | 1.2 meters |
| Impedance | 16Ω |
| Sensitivity | 95±3dB |
| Material | ABS + TPE wire |
| Compatibility | Universal – supports Android, iOS, laptops, PCs, consoles |
| Color Options | Black, White, Red, Customizable |
| Design | Ergonomic, lightweight in-ear structure |
| Packaging | Retail box or OEM custom packaging available |
| OEM/ODM | Supported |
| Origin | China (Factory Direct) |
D21 Wired In-Ear Headphones – Deep Bass, Universal 3.5mm Plug & Built-in Mic for Gaming, Music & Communication
The D21 In-Ear Wired Earphones offer a powerful combination of deep bass performance, universal compatibility, and hands-free communication, making them a reliable and affordable choice for B2B clients targeting diverse markets like gaming, education, audio accessories, and mobile electronics.
🎧 High-Performance Audio with Deep Bass
Equipped with a 10mm dynamic driver, the D21 delivers rich, deep bass and crisp mids/highs for a satisfying audio experience. Whether you’re listening to music, gaming, or watching videos, the D21 ensures immersive sound without distortion.
🎮 Ideal for Gaming and Entertainment
With its low-latency wired connection and stereo sound profile, the D21 is ideal for mobile gaming, console gaming, or streaming content. The inline microphone supports clear voice chats with teammates, enhancing competitive performance.
📱 Universal 3.5mm Compatibility
The standard 3.5mm audio jack ensures wide compatibility across a broad range of devices, including:
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Smartphones (with headphone jack)
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Tablets
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Laptops & PCs
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Game consoles (e.g. PS4/PS5 controllers, Xbox, Nintendo Switch via adapter)
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MP3/MP4 players
This makes D21 an excellent solution for bulk orders targeting schools, call centers, and digital education markets.
🎙️ Inline Microphone with Easy Controls
The integrated HD microphone and in-line control button allow users to:
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Answer and hang up calls
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Play/pause music
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Use voice assistants (compatible with Android/iOS)
Simple, user-friendly design that enhances usability across all age groups.
🧩 Designed for Comfort and Durability
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Lightweight and ergonomic in-ear fit for all-day use
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Tangle-free TPE wire enhances durability and user convenience
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Multiple ear tip sizes available for customized comfort
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Fashionable and minimal design suitable for youth and business use alike
📦 Customizable for B2B Orders
We support full OEM & ODM services, including:
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Custom logo printing on earbuds and packaging
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Color customization
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Bulk packaging options
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Marketing material for distributors
Our in-house factory ensures stable supply, fast lead time, and competitive pricing, making D21 a perfect fit for wholesale, dropshipping, and branded consumer electronics lines.
🌍 Applications
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Consumer electronics retail
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Educational supplies and online learning
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Gaming and mobile accessories
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Travel and airline amenity kits
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Promotional gifting
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Corporate communications tools
📩 Contact us now for full product catalog, samples, or wholesale pricing and customization details. Let the D21 boost your sales portfolio with a proven, practical, and cost-effective wired earphone solution.
