* ES-660i High Performance Headphone Noise Isolation Explosive bass in Ear with MIC Earphone for all smart phone tablets.Headphones AWEI ES970i and ES660i have a standard 3.5 mm audio plug and a microphone built into the wire, which makes it possible to talk without removing the phone from your pocket. This will free the hands of the user, which is extremely convenient in transport or driving. Headphones provide comfort with constant use, as well as the quality of performance of musical compositions high performance noise isolation explosive bass.Specifications:• Frequency range: 20-20000 Hz• Wire length: 1.2m• Impedance: 32 ohms• Type of connector: Mini jack 3,5 mm• Sensitivity: 85 dBPremium Quality Sound – Ultra-clear crystal sound quality and enhance bass response, noise cancelling reduces surrounding distractions and lets music stand out workouts or just relaxing.Lightweight Design – Ideal for listening during exercise, travel, or for everyday wearing premium performance earphones easily fits in your ear with comfortFeatures:• High fidelity, immerse you into natural and pure sound.• Built-in microphone, high sensitive, free your hands.• Lightweight, easy to store and carry outside or travel, enjoy music freely.• Ergonomic earbud, perfect angle, more comfortable wearing experience.• Wired control, convenient to answer call while driving, jogging, or etc.Colour: Black