BK Wireless Deep Bass BASS Up to approximately 20 hours of continuous BK Black Audio-Technica ATH-CKS330XBT Earphones, Bluetooth, [SOLID /

This product is certified with the Japanese Technical Conformity Mark (frequency band: 2.4GHz band). A full charge takes approximately 2 hours, providing up to approximately 20 hours of continuous playback. Approximately 10 minutes of charging provides approximately 2 hours of continuous playback. Low Latency Mode to minimize the delay between audio and video. Wireless and overwhelmingly powerful bass reproduction Supports multipoint connectivity, allowing simultaneous connection of two Bluetooth devices.