The high clear voice communication. Compatible withmost of the call center telephone,digital telephone. Headset head can freely telesopic,moderate elasticity,comfortable to wear. Super soft ear cushions,make sure to wear comfortable. High durability,fully adapt to 7x24 hours for high frequency. Cable length:about 1.2m Colour: black Material: plastic Size: 17*15*5cm Package Contents: 1 x Call center headset Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.