Not just a simple audio signal adapter, but also a wireless controller in a small size. Control volume, pause/play, skip tracks forward/backward. Just press the button. It can also be used as a photo button for your smart device to make group photography easier. Powered by a CR2032 button battery, its low energy consumption ensures a long lifespan, so you won't need to replace the battery for a long time. Features: -Color: Black. -Material: ABS -Size: 3.5 x 3.5 x 0.8 cm. - Universal: Compatible with most iOS devices and most Android 4.0+ phones/tablets (does not support Android navigation). - Easy to Use: Press the "+" and "-" buttons simultaneously for 2 seconds to activate; a blue light will flash on the front. Enable search on your mobile phone or tablet, select "Smart Remote," and click to connect and pair. - Multiple Uses: Can be used as a wireless controller to efficiently manage your smart device. Also functions as a photo shutter and music app controller. - Long-Distance Remote Control: 10 meters/32.8 feet wireless control allows for freer use. - Battery Powered: Powered by a CR2032 button battery, no extra power connection or battery required. Low energy consumption provides a long usage time on a full battery. - Warm Tip: Dear buyer, due to lighting effects, monitor brightness, manual measurement, etc., there may be slight differences in color and size between the photo and the actual item. We sincerely hope you can understand! Thank you! Packing List: 1 x Button