Be free from those cords. Break free from limitations with HJ-07 wireless products. We utilize 2.4GHz DSST technology to create a new generation in cordless products including headsets, amplifier and telephone systems when you don't want to be tied up by a cord. HJ-07 2.4GHz headset offers the ultimate in wireless freedom and sound quality in a stylish, comfortable design. The HJ-07 has up to seven hour of talk time and 200 hours of standby time, and a noise-canceling microphone that reduces background noise. Compatible with any office telephone, record device and computer.