The Anker SoundCore Q20i are over-ear closed headphones with a microphone, supporting both wireless and wired connections. Equipped with 40mm dynamic drivers, they deliver sound reproduction in the range of 20 to 20,000 Hz. The design features a plastic headband with faux leather, plastic ear cups, and faux leather ear pads. With a built-in battery, the Anker SoundCore Q20i can operate for up to 60 hours in playback mode with noise cancellation turned off, and fast charging provides 4 hours of use in just 5 minutes. The headphones support Bluetooth 5.3 and are compatible with A2DP, AVRCP, HSP, HFP, allowing simultaneous connection to multiple devices. Included is a detachable 1.2m cable with a mini jack 3.5mm connector. The one-sided cable connection ensures ease of use, while the straight plug enhances compatibility with various devices. Active noise cancellation and transparency mode allow the Anker SoundCore Q20i to adapt to different situations, and the built-in microphone with noise cancellation ensures clear voice during calls. Charging is done via a USB cable, and an audio cable for wired connection is also included. These headphones are perfect for those seeking a device with long battery life and flexible connection options.