Foldable and adjustable design for easy transport and space saving. The headset can be folded for compact storage and carried wherever you go. When the battery is low, you can use it as a wired headset with the provided audio cable. Portable and stretchable for everyday comfort. It features a lightweight design that is comfortable at home, in the office, or on an airplane. The stretchable construction provides freedom of movement and durability with no constraint. Builtin microphone for convenient communication. The headset includes a microphone with a sturdy yet flexible ergonomic headband and foam earpads, designed to reduce cranial pressure and provide comfortable listening and talking sessions. TF card playback and multicolor breathing light. You can insert a TF card to use the headset as an MP3 player with lossless playback. It supports 32GB, allowing almost 6000 pieces of music on the device. A multicolor breathing light adds a subtle nighttime visual effect. Use scenarios Travel and commuting: The foldable, lightweight design makes it easy to carry in a bag or backpack, with offline music playback via TF card for long journeys. Home or office listening and calls: Comfortable for extended listening sessions, with the builtin mic for voice calls or online meetings. Low battery or wired mode: When battery runs low, switch to wired mode using the included audio cable to continue using the headset.