Amazon.com Product Description The Plantronics T50 offers simple operation plus the convenience of a cordless phone with headset. Headsets reduce neck and back strain, increasing your productivity and comfort when you work long hours. Attached to the headset is an adjustable boom microphone with volume control. The super-lightweight, compact phone connects to a standard jack. Then, simply clip on the T50 and talk as you multitask. The T50 has flash, redial, and hold buttons and is supported by a 90-day warranty. From J&R Music and Computer World The PLANTRONICS T50 Corded Telephone with Headset is designed for convenience and postural health. On telephones with handsets, people try to talk hands-free by squeezing the handset between the cheek and shoulder, leading to stiffness. That needn't happen anymore. The Plantronics T50 headset telephone gives you the freedom to work with both hands and the comfort of a natural head and neck position Put on the noise-canceling headset while you're working and use the base unit to make or answer calls Convenient stand attached to the back of the base unit where you can rest the headset when your not using it Adjustable headset for over-the-head or over-the-ear convenience Adjustable volume and tone control for superior sound On-line indicator Redial, Flash and Mute functionsRinger volume control Cable connects to existing phone jacks Continued use may help prevent handset-related, chronic shoulder and neck pain