• In-ear headphones with microphone – designed for use with smartphones and computers and tablets with microphone and sound capabilities. • Speak directly into microphone panel for optimal quality. • Headphones made of PU Plastic cord with Silicone earbuds and are approx. 31"l. • Includes 3 different sized interchangeable buds for the most comfortable fit for your ear [earbud sizes: 0.39" (0.9cm), 0.43" (1.1cm), 0.47" (1.2cm)]. • Buds come packed in compact square ABS Plastic case. • Cord wraps around the case to keep from tangling when not in use. • Note: Printing available on case only. • Power /Technology: Frequency Range: 20Hz-20,000 Hz; Sensitivity: 108±3dB S.P.L. at 1KHz; Input: 50mW; Impedance: 32O; Driver Unit: F10mm; Plug Type: 3.5mm Stereo.