AUD-331 - Earphones Steren - Free user manual and instructions

Product Type	Hands-free Earphones with Microphone
Brand	Steren
Model	AUD-331
Driver Unit	10 mm
Frequency Response (Earphone)	20 Hz – 20 kHz
Impedance	32 Ohms
Sensitivity (Earphone)	103 dB ± 3 dB
Microphone	Built-in
Microphone Sensitivity	-58 dB ± 3 dB
Microphone Frequency Response	30 Hz – 16 kHz
Connector	3.5 mm audio jack
Cable Length	Approximately 1.2 m
Weight	Approximately 15 g
Usage	Music playback and hands-free calls
Channel Marking	L (Left) and R (Right)
Safety Warning	Keep volume low to prevent hearing damage; do not use while driving or operating machinery
Water Resistance	Not waterproof; avoid exposure to water or splashes
Cleaning	Use a soft, dry cloth only
Compatibility	Devices with 3.5 mm audio output (smartphones, tablets, laptops, etc.)
User Guidance	Not intended for persons (including children) with reduced physical, sensory, or mental capabilities without supervision

Frequently Asked Questions - AUD-331 Steren

How do I clean the Steren AUD-331 earphones?

Clean the earphones with a soft, dry cloth. Do not use water or cleaning agents.

Can I use these earphones while running or exercising?

It is not recommended to use earphones while doing any activity that requires attention, as high volume can mask external sounds and pose a safety risk.

What is the impedance of the AUD-331 earphones?

The impedance is 32 Ohms, making them suitable for most portable devices.

Are the earphones compatible with my smartphone?

Yes, they have a 3.5 mm audio jack and are compatible with most smartphones, tablets, laptops, and other devices with a similar port.

How do I wear the earphones correctly?

Identify the markings: wear the earbud marked L in your left ear and R in your right ear for optimal stereo sound.

Do the earphones have a microphone?

Yes, they include a built-in microphone for hands-free calling, with a sensitivity of -58 dB and frequency response of 30 Hz – 16 kHz.

What is the frequency response of these earphones?

The earphone frequency response is 20 Hz – 20 kHz, covering the full audible range.

What should I do if there is no sound from the earphones?

Check that the 3.5 mm plug is fully inserted into the device. Ensure the device volume is turned up and not muted. Test with another device if possible.

Can I use these earphones for hands-free calls?

Yes, the earphones have a microphone and support hands-free function. Controls may vary depending on your device's operating system.

Is it safe to use the earphones in the rain?

No, the earphones are not waterproof. Avoid using or storing them where they may be exposed to water or splashes.

USER MANUAL AUD-331 Steren

Illustration of two earbuds with different sizes and connectors (no text or symbols)

AUD-331

Illustration of two earbuds with different sizes and connectors (no text or symbols)

AUD-331

Hands-free earphone

V0.D'1218v

Before to use the product, please read carefully this manual to avoid any malfunction. The info in this manual is shown as reference. Consult our website www.steven.com to obtain the current version of this manual.

CAUTIONS

• Before to use it, ensure that the volume level is low. The high sounds may cause damages in your ears.
• Avoid use the earphones while you do any activity. It's dangerous increase the volume level, may you can't ear external sounds.
• Don't use or store the device in places where exist water or splashes.
• Always use a soft and dry cloth to clean it.
• This device is not designed for being using by people (including children), with physical capacities, sensorial or mental reduced, or they don't have the necessary experience or knowledge.
• The children should be supervised to ensure that don't use. Like a toy.

DESCRIPTION

HOW TO USE

1. Connect the earphones into the 3.5 mm input of your device.

1. Put you the earphones

R (to right ear) and L (to left ear)

Playback Music*	HandsFree*

*This functions may vary according with the OS of your device.

SPECIFICATIONS

Earphone

Frequency response: 20 - 20 DCO Hz

Driver unit: 10 mm

Impedance: 32 Ohms

Sensitivity: 103 = 3 dB @ 1 kHz

Maximum power output: / mW

Microphone

Sensitivity. 58 dB ± 3 dB

Frequency response: 30 Hz - 16 kHz

Specifications may change without previous notice