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Introduction

The Open-ear Stereo Headset STH40D keeps you connected with your surroundings while listening to music or talking on the phone. You can also use the voice assistant when connected to a compatible Android™ or iOS device.

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On your Xperia™ device, go to Settings > About phone/tablet > Model number
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On your Xperia™ device, go to Settings > About phone/tablet > Model number