Lilware Dare to Be Visible Hard Plastic Party Bracelet Wristband With LED Flashing Light / Sound Sensor and Rubber Strap. Black / Transparent The colorful LED lights come with a sound activated sensor to make the lights come alive when sounds are played. Perfect for adding excitement to concerts, parades, and lighting up the night! You can put this wristband next to music to hear the beat to make it light up. Package Contents: 1 x bracelet and 2pcs battery (3V). This is high quality product distributed only by Accessory Department. Accessory Department is the owner of all intellectual property rights in this listing and in the material published on it. Lilware (TM) is trademark of Accessory Department. It is protected by corresponding copyright laws and treaties. All rights are reserved.