The Monster Beats headphones in green are over-the-head headphones that were designed with comfort in mind. The Monster Beats headphones are soft and flexible, which allows them to sit on the head for extended periods of time without any type of discomfort. The Monster Beats by Dr Dre Studio are commonly used by DJs as they have the ability to fold into a compact position due to their flexible nature. These headphones are also lightweight, which makes them easy to carry. The Monster Beats headphones also feature ear cups that were designed to effectively block out any outside noise and come equipped with a mute button so that a person can pause and start their music stream quickly. The Monster Beats by Dr Dre Studio are over-the-head headphones that have a frequency of 20 Hz to 20 kHz and a sensitivity rating of 110 dBs.