Wireless phone headsets for cordless phones provide the same interference free sound clarity and call security found in other telephone headsets but are designed to work on cordless phones. Noise cancelling microphones and voice-dedicated technology eliminate background noise and limit interference. Cordless telephone headset allows users the freedom to move around the house or yard without compromising clarity, making them ideal for home based professionals.(Users may range up to 300 ft from base unit.) Some wireless headsets work on both cordless and corded telephones.