The ergonomic telephone headset has elastic head beam and rotatable cushions, bringing you comfortable wearing feeling. Clear and lossless calling experience can be realized by the noise-cancelling microphone of the telephone headset. Made of plastic and metal, the telephone headset is durable and eco-friendly to use. The cable is very long, which is convenient for you to work. The length of the telephone headset is 15cm, width is 15cm and height is 18cm. The cable length is 2.5m. The telephone headset is suitable for being used in telemarketing, truck driver office, customer service and so on. Item Name: Telephone Headset Material: Plastic, Metal Model: H300D Color: Black Interface: 3.5mm, RJ9(Optional) Cable Length: 2.5m Impedance 150 Ω Wearing Style: Head-mounted Horn Diameter 28Φmm Features: Noise Cancelling, Comfortable, Ergonomic Size Details: Headset: 15cm x 15cm x 18cm/5.91" x 5.91" x 7.09" (Approx.) Cable Length: 250cm/98.43" (Approx.) Notes: Due to the light and the screen setting difference, the item's color may slightly differs from the pictures. Please allow slight dimension difference due to the manual measurement. Package Includes: 1 x Telephone Headset 1 x User Manual Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.