Dual Driver Hybrid Over the Ear Detachable Earbuds. Features: Dual driver: 10 mm titanium daphragm dynamic driver produces abyssal lows while the highly-acclaimed Knowles 33518 BA driver provides exquisite mids and highs. Carefully-crafted crossover design for balanced, precise sound; High-Res Audio certified. Detachable cable design with MMCX connectors, supplied with both a 3,5 mm single-ended audio cable with in-line microphone and control, and a 2.5 mm balanced cable. Thoughtful accessories: 6 pairs of silicone ear tips + waterproof carrying case. Specs: Frequency Response: 20 Hz ~ 40 kHz. Sensitivity: 106 dB/mW. Impedance: 26 Ω. Weight: about 21 g. Colour: Blue.