The UiiSii S4C Type-C Earphones are designed for the modern mobile user who demands clarity and convenience. Optimized for devices with Type-C audio output, these earphones eliminate the need for clunky adapters. With a focus on Bass Stereo performance and a comfortable in-ear fit, the S4C provides an immersive listening experience whether you are commuting, working out, or taking important voice calls through the integrated HD Microphone.
Who Should Buy This
- Type-C Smartphone Users: Perfect for flagship devices from Samsung, Xiaomi, Pixel, and iPad Pro models that have ditched the traditional headphone jack.
- Music Lovers on a Budget: Delivers high-sensitivity (112dB/mW) sound with deep bass at an incredibly affordable price point.
- Students & Remote Workers: The built-in microphone and in-ear isolation make it ideal for online classes and Zoom meetings.
- Daily Commuters: The 1.2-meter cable provides ample length to keep your phone in your pocket while you enjoy your favorite playlist.
Real-World Performance
- Digital Audio Fidelity: The Type-C interface ensures a cleaner signal compared to standard analog plugs, reducing static and background hiss.
- Comfortable Wear: Designed to sit naturally in the ear canal, minimizing fatigue even after hours of continuous use.
- Tangle-Resistant 1.2m Cable: The cable length is optimized for mobile use, offering flexibility without becoming a messy bird’s nest in your bag.
Technical Specifications
| Brand | UiiSii |
| Model | S4C |
| Interface Type | USB Type-C |
| Sensitivity | 112dB/mW |
| Frequency Range | 20 – 20,000Hz |
| Impedance | 32Ω |
| Microphone | Yes (Built-in) |
| Material | High-Quality Plastic |
| Cable Length | 1.2 Meters |
| Sound Feature | Bass Stereo |
What’s in the Box
- 1 x UiiSii S4C Type-C Earphones
Frequently Asked Questions
Will this work with my Samsung S23/S24?
Yes, it is compatible with most modern smartphones that use Type-C for audio output.
Does the microphone work for gaming?
Yes, the microphone is suitable for in-game voice chat and team communication.
Is there a volume control?
The S4C typically features a single-button control for answering calls and play/pause; volume is usually adjusted via the host device.











Hridoy Hasan (verified owner) –
Really nice earphone