LINKVIL DH401B OWS Bluetooth Headset delivers clear and natural communication wherever you work — in transit, at the office, or on the go. Its open-ear design ensures hygiene and situational awareness for safer, more natural interaction. Equipped with dual-mic AI noise cancellation and precise voice pickup, it keeps every call crystal clear. The 13.6g lightweight ear-hook design provides a secure, comfortable fit, while Bluetooth 5.4 multipoint connection allows seamless switching between phone and PC. Compatible with LINKVIL portable phones and Fanvil VoIP phones, DH401B offers up to 23 hours of talk time with the charging case — enough to keep you productive throughout the day.