Beats Solo HD will be listed in early February 2010, models with black, white, red, three kinds of color models. The red version of the Product Red charity edition. Beats Solo HD each sold a red version, sales of $ 5 will be donated to the Product Red body, to help African women and children with AIDS. brand of Monster type ear wearing style Frequency response 20-23000Hz Length 1.2m Weight (without cable) 180 g Sensitivity 115dB 3.5mm plug.
