What Bluetooth version does the SD-U3 headphone use?

The SD-U3 headphone uses Bluetooth version 5.3 based on the AC7018 chipset.

How effective is the ANC/ENC noise reduction?

It features doubly-fed ANC/ENC with noise reduction up to -40dB for clear and immersive audio.

What is the playback and calling time?

The SD-U3 provides a minimum of 40 hours playback and 40 hours calling time at 70% volume.

How long does it take to fully charge the SD-U3 headphone?

It takes up to 2 hours to fully charge via USB Type-C.

Can I connect the headphone to two Bluetooth devices simultaneously?

Yes, the SD-U3 supports Bluetooth multi-connection, allowing pairing with two devices at the same time.

Does it support voice assistants?

Yes, the headphone supports wake-up for multiple voice assistants including Siri.

Is OTA or USB firmware update supported?

Yes, the SD-U3 supports both Over-the-Air (OTA) and USB updates for firmware.

What is included in the packaging?

Each unit includes 1 headphone and 1 charging cable.

SD-U3 Bluetooth ENC ANC enabled Earbuds

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Designed By: SpeakerDriver
Product ID: SD-U3

SD-U3 Bluetooth ENC ANC enabled Earbuds

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.

Color
Black, White

Price
21.6$

MOQ
2000 Units

Leadtime
25 days

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

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SpeakerDriver™
by Cockatwo Private Limited
CIN: U62013RJ2023PTC091507
Manufacturing Unit: Yongsheng Industrial Park 523510, Dongshan, Qishi, Dongguan, China