We created the R6 on-ear headphones to provide listeners a comfortable, superior listening experience at an affordable price. Klipsch feels that everyone deserve the best acoustics available - and that's why we are The Keepers of the Sound. The R6 on-ear headphone's flat-fold design is the perfect audio accessory for the everyday traveler. These headphones are lightweight, compact and durable - and they sound amazing. Dynamic Moving Coil 40MM Speaker Klipsch's custom, full-range KG-150 dynamic moving coil speaker delivers a warm and authentic sound. High-Density Memory Foam Ear Cups Allow for comfortable, long-term wear and superior passive noise- isolation. Adjustable Leather Headband Provides custom fit and comfort. Product Specifications: Style: On-Ear Driver Design: Dynamic 40mm Moving Coil Driver Components: Full Range KG-150 Driver Diameter: 40 mm Frequency Response: 20Hz-20kHz Sensitivity (1MW): 110dB Impedance (1KHZ): 32 ohms Input Connections: 3.5 mm Weight: 160.3 grams Color: Black