Features:1. High quality: The headphones feature noise isolation technology that will allow you to flow into the world of music. A high-power dynamic speaker system for superior sound quality.2. Convenient: The built-in microphone allows you to make hands-free calls while exercising.3. Volume Control: Don't worry about running out, gives you unlimited listening, with volume control function.4. This lightweight in-ear headphones adopts a double-moving coil, which makes the high frequency more natural and powerful.5. The noise-isolating in-ear design blocks out background noise, helping you focus on your listening pleasure. Description:The standard 3.5mm AUX jacks are compatible with smartphones, tablets, MP3 and almost all 3.5mm audio devices. Specifications:Headphone Type: In-Ear HeadphonesWearing Method: in-earHeadphone Output Source: GeneralPlug Diameter: 3.5mm Plug Type: in-line typeWith or without microphone: YesSound Principle: Moving CoilFrequency Response Range: 20-20000 (Hz)Impedance: 32 (Omega;)Sensitivity: 96-110 (dB)Distortion Rate: 0.1 (%)Wire Length: 1.2 (m)Speaker Diameter: 10 (Phi; mm)Earplugs/Ear Pads Material: Silicone Earphone Cable Material: TPE Package Included:1pc * EarbudsNotes:1. Please allow 0-1 inch error due to manual measurement. Thank you for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different s