ATH-CKS30TW+ Matt Black true wireless in-ear headphones feature dynamic 9mm drivers with a frequency response of 5–20,000 Hz, delivering deep bass enhanced by Bass Boost technology. Equipped with active noise cancellation (6.5h battery life with ANC), hear-through functionality, and IP55-rated waterproofing, they support Bluetooth 5.1 with AAC/SBC codecs. Includes customizable touch controls, multipoint pairing, 17.5h total battery life (with case), and app-driven features like soundscape modes. Weight: 4.5g per earbud, 28g charging case. No external amplification required.