These headphones are an awesome choice in order to shop within an eco-conscious way. But even if you don't care about green tech, the 80-hour battery life (if you even control to drain them extra swiftly than ambient light can recharge them) can make them ideal for prolonged listening periods. https://allhealthmarket.com/product/smart-wearables/smart-electronics-smart-wearables/headphones/b19-wireless-headphones-with-fm-radio-bluetooth-headset-stereo-microphone/