Bluetooth 5.0 compatible wireless earphones with a focus on sound quality, boasting a 20-hour battery life. Wireless headphones audio-technica Solid bass - Brand: audio-technica - Model Name: ATH-CKS660XBT - Connectivity: Bluetooth 5.0 - Battery Life: 20 hours - Supported Codecs: AAC, SBC - Sound Pressure Level: 104dB/mW - Low Latency Mode: Supported - Type: Dynamic Thank you for viewing. Thank you for your interest. The product details are listed below. First, everything shown in the photos will be shipped in the box. All accessories other than the main unit are brand new and unused. Up to approximately 20 hours of powerful, deep bass with a metal body. Features include a low-latency mode suitable for watching videos, playing games, etc. Aluminum enclosure. Can connect to two devices simultaneously. The type is dynamic. The playback part of the main unit is made of rubber. Only the center part is peeling. The output sound pressure level is 104dB/mW. Other than that, the main unit produces sound and the operation buttons are in perfect working order. The sound quality is also stable, and I recommend it.