Key Features
- Bluetooth 5.0 connectivity with ~10m stable range
- Qualcomm QCC5125 chipset with aptX Adaptive codec for low-latency (~80ms), high-res audio
- Dual dynamic drivers (~9.2mm) per magnetic in-ear earbud
- 100mAh battery per earbud — up to 9 hours playback, 200 hours standby
- 10-minute quick charge gives ~2.5 hours of playback
- USB Type-C charging
- Built-in DSP and cVc noise reduction for clear calls
- Supports voice assistants (Xiao AI/Siri/Google Assistant)
- Lightweight neckband design (~25g)
Specifications
| Model | Xiaomi Mi Line Free (YDLYEJ04LS) |
|---|---|
| Bluetooth Version | 5.0 |
| Chipset | Qualcomm QCC5125 |
| Codec | aptX Adaptive |
| Driver | Dual dynamic, ~9.2mm per side |
| Battery | 100mAh per earbud |
| Playback Time | Up to 9 hours |
| Standby Time | Up to 200 hours |
| Charging Port | USB Type-C |
| Weight | ~25g |
| Colors | Black / White / Silver |
Frequently Asked Questions
Q: Is the Mi Line Free waterproof?
A: It has a sweat-resistant design suited for workouts, though no official IPX certification is published.
Q: How long does it take to fully charge?
A: Around 1 hour for a full charge via USB Type-C, with 10-minute quick charge giving about 2.5 hours of playback.
Q: Does it support voice assistants?
A: Yes, it works with Xiao AI, Siri, and Google Assistant.



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