Sony STH40D User's Guide

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Year 2018

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Sony STH40D Specification

The Sony STH40D is a versatile dual listening headset designed for users who require a balance between environmental awareness and personal audio enjoyment. It features an open-ear design that allows ambient sound to blend seamlessly with your music, ensuring safety and awareness in various environments such as commuting or exercising outdoors. The headset is lightweight, weighing approximately 18 grams, and provides comfort for prolonged use with its ergonomic ear-fitting structure.

Equipped with 13.6mm dynamic drivers, the STH40D delivers clear and balanced audio output, offering an immersive listening experience suitable for a wide range of audio content. It connects via a standard 3.5mm audio jack, ensuring compatibility with a variety of devices, including smartphones, tablets, and laptops.

The STH40D incorporates an in-line remote with a built-in microphone, enabling hands-free calls and easy control over music playback without needing to access the connected device directly. Users can play or pause tracks, adjust volume, and answer or end calls with a simple press of a button, enhancing convenience during daily activities.

Crafted with premium materials, the STH40D is not only durable but also resistant to splashes and sweat, making it suitable for active users. Available in multiple color options, it allows users to choose a style that best fits their personal taste. The Sony STH40D represents a blend of functionality, style, and practicality, catering to users who value situational awareness without compromising audio quality.

Sony STH40D F.A.Q.

How do I pair the Sony STH40D with my smartphone?

To pair the Sony STH40D with your smartphone, first ensure the headset is charged. Turn on Bluetooth on your smartphone. Press and hold the power button on the headset until the indicator light flashes blue. On your smartphone, search for Bluetooth devices and select 'STH40D' from the list.

What should I do if the headset does not turn on?

If the headset does not turn on, ensure it is charged. Connect it to a power source using the provided USB cable. If it still doesn't turn on, try resetting the device by pressing and holding the power button for about 10 seconds.

How can I improve sound quality on my Sony STH40D?

For better sound quality, ensure the earbuds fit snugly in your ears. Adjust the equalizer settings on your smartphone for optimal audio performance. Also, ensure that the volume on your device is set to an appropriate level.

How do I clean and maintain my Sony STH40D?

To clean your Sony STH40D, use a soft, dry cloth to gently wipe the earbuds and the cable. Avoid using water or any liquid cleaners. Regularly check for debris in the earbud tips and remove any buildup with a dry brush.

Can I use the Sony STH40D for hands-free calls?

Yes, the Sony STH40D is equipped with a built-in microphone that allows you to make hands-free calls. Simply press the call button on the inline remote to answer or end calls.

What is the battery life of the Sony STH40D?

The Sony STH40D offers up to 7.5 hours of continuous usage on a full charge. Battery life may vary depending on usage and volume levels.

How do I reset the Bluetooth connection on the Sony STH40D?

To reset the Bluetooth connection, turn off the headset and turn it back on. If issues persist, delete the 'STH40D' from your device's Bluetooth list and repeat the pairing process.

Is the Sony STH40D water-resistant?

The Sony STH40D is not water-resistant. Avoid exposing it to moisture or wet conditions to prevent damage.

What should I do if the sound is only coming from one earbud?

Check the connection to ensure the earbuds are properly plugged in. Try adjusting the balance settings on your device. If the issue persists, inspect the earbud for debris or damage.

How can I update the firmware on my Sony STH40D?

Currently, the Sony STH40D does not support firmware updates. Ensure compatibility with your device by using the latest versions of your smartphone's operating system and applications.