1. Touch the Bluetooth button with your finger to control multimedia playback without handling your phone. 2. Control playback, pause, skip forward and backward, and adjust the volume of phone ringtones and media playback. Operate seamlessly even when your phone is in your pocket or bag, within an effective range of up to 12 meters. 3. Wide compatibility: Works with iOS devices supporting Bluetooth 3.0 or later, and Android devices supporting Bluetooth 4.0 or later. 4. Compact design with a diameter of 35 mm (1.38 inches). Battery: CR2016 coin cell battery Size: 35 mm / 1.38 inches in diameter Instructions: 1. Ensure your phone’s Bluetooth is turned on. 2. Press and hold the pairing button until the indicator light turns blue and begins flashing. 3. Check if “Bluetooth Media Button” appears in your device’s Bluetooth list. 4. Select “Bluetooth Media Button” and wait for the pairing prompt. 5. Tap “Pair” on the prompt to complete connection. Color: Black Material: Plastic Package Includes: 1 x Wireless Bluetooth Remote Control Note: Color may vary slightly due to screen settings and lighting conditions. Measurement tolerance: ±1–3 cm.