The GN9120 Flex NC Single-Ear Wireless Headset from Jabra is designed to allow you to take calls from your desktop phone wirelessly. It includes both headband and earhook attachments as well as a base station charger. The GN9125 Flex NC employs Digital Enhanced Cordless Telephony (DECT) wireless technology to provide up to a 300-foot range of operation. You can connect up to 4 GN9125 Flex NCs to a single base station to allow for conference calls. . The headset has a built-in rechargeable battery that can provide up to 12 hours of talk time and up to 12 hours of standby. Its microphone features noise-cancelling technology designed to provide accurate reproduction of your voice.