JVC Kenwood KENWOOD KH-M100-W Single-Ear Headset, Bluetooth Compatible, Continuous Talk Time Approximately 4 Hours, Compatible with Both Left and Right Ears, Suitable for Telework and Video Conferencing, White Features a long-lasting battery with approximately 4 hours of continuous talk time and 85 hours (approximately 3.5 days) of standby time. Includes an ear hook for stable wearing. Supports multi-point connectivity (simultaneous standby for 2 mobile phones). Can be worn on either the left or right ear. Certified with the Technical Regulations Compliance Mark. Operating frequency band: 2.4GHz band (2.4000GHz-2.4835GHz) Multiple units in stock.