Those days of hassling with wires and unsynchronized earbuds are over when you use these A'Ray true wireless earbuds for your listening needs. These earbuds come with a 1.02" x 2" x 2.48" charging case that can charge your earbuds fully four times. They utilize Bluetooth technology and will automatically turn on and sync with each other once taken out of the case. They offer 4 hours of playback time at max volume on a single charge and active noise cancellation, making them great for traveling. Your music experience can be better when you use these A'ray earbuds.