SD-U3
The SD-U3 is a premium Bluetooth 5.3 headphone with dual-feed ANC/ENC noise cancellation (up to -40dB), 40mm drivers, 40-hour battery life, low-latency mode, OTA support, and dual-device connectivity—ideal for OEM/ODM bulk orders.
- Designed By: SpeakerDriver
- Product ID: sd-u3
Technical
Specifications
| Feature | Specification |
|---|---|
| Bluetooth Solution | AC7018 / V5.3 |
| ANC/ENC | Doubly-fed ANC/ENC Noise Reduction -40dB Max. |
| ANC/ENC Modes | Normal, Transparent, ANC |
| Audio Code Support | SCC, SBC |
| Profile Support | A2DP, AVRCP, HFP, HSP |
| Valid Distance | 10m Max. |
| Low-latency | 50ms |
| Battery | 500mAh (Polymer Lithium Battery) |
| Playback Time | 12 Hours Min. at 70% Volume |
| Calling Time | 12 Hours Min. at 70% Volume |
| Charging Time | 2 hours Max. (Type-C) |
| Low Alarm/Shutdown Voltage | 3.4V / 3.2V |
| Battery Protection | Overcharge/discharge, overcurrent, and short circuit protection |
| Speaker Driver | 13mm Dynamic F0=100Hz 32ohm |
| Sensitivity | 104dB+/-2dB |
| Mic | -26dB+/-1 |
| Software | Support OTA and USB |
| Voice Assistant | Wakeup voice assistant, supports multiple voice assistants including Siri |
| Bluetooth Multi-Connection | Connects to two Bluetooth devices simultaneously |