Key features Services Product type Headphones Wear-style Earhook, Headband, Neckband Recommended use Office/call center Product color Black Headset type Monaural Certification DECT Security certified Connectors and interfaces Transmission technology Wireless range 40 m Headphone position Headphone speaker Supraaural Headphone Frequency 100 - 7500 Hz Magnet Type Neodymium Microphone Microphone Type Boom Microphone Frequency 100 - 7500 Hz Active Noise Cancellation Yes Mic Count 2 Batteries Talk Time 10 h Battery Charging Time 4 h Standby Time 48 h Operating Conditions Operating Temperature Range 5 - 45 °C Storage Temperature Range 20 - 70 °C Package Included Quick Start Overview Yes Receiver Included Yes Wireless Receiver Port USB Bag Yes Quantity 1