audio-technica ATH-CKS330XBT GR Wireless Earphones Bluetooth Green audio-technica This product is certified with the Technical Compliance Mark (Frequency band: 2.4GHz band). Approximately 20 hours of continuous playback with a full charge of about 2 hours. Approximately 2 hours of continuous playback with a 10-minute charge. Low latency mode to reduce audio-visual lag. Overwhelming low-frequency expression wirelessly. Supports multi-point connection, allowing simultaneous connection to 12 Bluetooth devices. Used for: 1 day Please refrain from purchasing if you are sensitive to used items. There are no noticeable scratches. Audio-Technica Model Name...ATH-CKS330XBT Wireless Earphones