Thank you for viewing. ◆ Product Name/Model Number: Non-Occlusive Air Conduction Wireless Stereo Headset NB Type (Black) / TOA-TM-PC-ACWHN-001 ◆ Features: Open-ear type that doesn't block the ears, employing air conduction. Bluetooth: Compatible with version 5.3, supporting HFP/HSP/A2DP profiles and SBC/MP2/MP3/WMA/APE/FLAC/MP4/WAV/AIF protocols. ◆ Battery: Continuous playback time is approximately 7 hours, standby time is approximately 280 hours, and charging time is approximately 1.5 hours. ◆ Waterproof Performance: IPX7 equivalent waterproof performance, but not completely waterproof. I will ship as soon as possible. Thank you.