Energy Headphones BT Travel 5 ANC headphones are bluetooth headphones with Active Noise Cancelling technology, which reduces external noise to enjoy a clear sound. With folding headband and 90 degree rotation system, they have integrated microphone and offer up to 12 hours of autonomy in ANC mode. They are wireless thanks to Bluetooth 5.0, allowing control and calls to be controlled without using the device. With their Anc mode activated, they offer up to 40 hours of autonomy, and in Bluetooth mode up to 16 hours. They are easy to transport and store thanks to their folding design and pillows with rotation. They also include a removable audio cable and a transport bag for comfort and protection.