The CS540 uses the same super-lightweight headset design of the new Savi 740 and together they share the title of lightest DECT headset on the market.
A new energy efficient design adapts to any changes in use, such as distance from the base and length of the call. Of course, it comes fully equipped with noise cancellation, call controls, remote answering capability (however, the HL10 lifter is not included unless specified), hearing protection and hi-def wide-band audio.