Ultra-lightweight headphone designed for comfort during extended use. The bass beat vents produce deep, rich sound. Sounds around you are perfectly blocked out while the sound from the headphone is kept in a sealed chamber for perfect quality. Professional headset that enables concentrated transcription in busy office environments Philips accessories are designed to help you make the most of your Philips dictation devices. They guarantee optimal results and ensure that your Philips products enjoy a long life. 30 mm speaker driver delivers big sound performance Compact for wearing comfort, yet big enough to deliver crisp, powerful sound, the 30 mm speaker driver is the perfect size for non-distorted listening enjoyment. Bass beat vents allow air movement for better sound Bass beat vents allow air movement for better sound with a deep rich bass. Reinforced cable connectors ensure quality and durability A soft plastic part on the earshell reduces cable strain, protects the connection and prevents damage from repeated bending. Ultra lightweight headband improves comfort and fit The slim, lightweight stainless steel headband is so light you’ll hardly notice you’re wearing it. 3 meter/10-foot cable for freedom to move about your work area The 3 meter/10-foot cable gives you the freedom to move around your work area without having to remove the headphones.