Bluetooth 5.0 technology: Wireless headset with an advanced Bluetooth chip to ensure fast pairing and a stable connection. It can pair with any Bluetoothenabled device. 3 modes and hifi stereo: The headset supports Bluetooth connection, 3.5 mm wired connection (1 m headphone cable included), and cardinserted mode for music playback. A 3.5 mm audio cable is included, so you can use it wireless or wired and enjoy hi fi stereo. Wide compatibility: Press and hold the multi function button for 2 seconds to enter pairing mode. Compatible with devices that support Bluetooth or 3.5 mm plug cables. LED lights run around the edges of the earpieces for a stylish look. Builtin microphone and volume control: The builtin microphone enables hands and clear phone calls. Four buttons control playback and calls: play/pause, previous/next track, volume up/down, and answer/end calls. Overear design: Comfortable overear headphones with a builtin mic for extended use. Use scenarios: Commute or travel: switch to Bluetooth for hands calls and wireless music. Home or office: use the wired 3.5 mm mode for reliable audio and easy inline control. Offline listening: insert a card and enjoy music from the cardinserted mode.