Can you pay attention to music once the battery runs down? Yes, you may continue on to hear your supply regardless of whether the battery electricity is depleted. Without power, the headphones function in a very passive mode and neither active noise cancellation nor Active EQ is able to operate. https://allhealthmarket.com/product/smart-wearables/smart-electronics-smart-wearables/headphones/b19-wireless-headphones-with-fm-radio-bluetooth-headset-stereo-microphone/