Bluetooth 5.0 and Built-in MicrophoneBuilt-in two 40mm large bezel driver units and Bluetooth 5.0 technology, our headphones can provide more stable transmission speed, lower delay and better audio output, bringing you Great music to enjoy. 6EQ Modes & HiFi StereoYou can choose 6 sound effects: Pop/Classical/Rock/Jazz/Deep Bass/Clear Sound. Up to 40 Hours of PlaytimeOur over-ear headphones have a listening time of up to 40 hours in Bluetooth mode, three times longer than other Bluetooth headphones, you will always have music to inspire you. Comfortable and Ultra LightThese over-ear bluetooth headphones are equipped with ultra-soft ear pads and adjustable headband for long-lasting comfort. Ear pads mimic the texture of human skin for long-lasting comfort. Long Battery Life & Dual ModesThe over-ear wireless earphones are rechargeable. Dual mode switching back and forth allows you to enjoy music continuously during long-distance travel.