Features The unique form of the iPlug 200 allows for a certain level of snugness in your ear that most other in-ear designs don’t have. It’s a headset as well – with a push-to-talk microphone and 3.5mm jack that works with most devices.Technical Specifications ¥Speaker Dimension : 9.2mm ¥Impedance : 16? ¥Sensitivity : 92dB ¥Frequency Response : 20Hz – 20kHz ¥Cord length : 1.2m ¥works with all mobile devices with 3.5mm jack ¥Supreme audio quality from the Earpump legacy ¥premium quality silicon gel included (4 sets) ¥Built-in high sensitivity push-to-talk microphone ¥Soft travel pouch included ¥In-ear stereo design comfortably in your ears ¥Serious bass cleverly coupled with superb audio clarity