Wireless Bluetooth In-Ear Earphone Sports Neckband Super Bass Headset Earbuds Headphone Feature:1. The patented design of Energy-accumulating Bile Cavity can effectively filter out the sharp noise, make the voice more mellow and cohesive, and make the super-heavy bass more sinking in your ears.2. It conforms to ergonomic design and brings all-day comfort.3. Skin-friendly soft food ear cap, different specifications, whether listening to songs, games or phone calls, there is always a ear cap suitable for you.4. Humanized neck hanging and stotage line makes wearing more comfortable and storage more convenient.Specification:Brand: mocroxModel: mocrox-1003Colour: blackBluetooth version: 4.1Plan: csrPlug Diameter: Wireless HeadphonesHeadphone categories: sports headphonesWaterproof property: IPX4Microphone: YesWearing style: In-Ear styleHeadphone type: wireless headphonesWire control: Yes.Applicable Music Types: UniversalImpedance: 32 ohmsSensitivity: 107dB/mWFrequency response range: 20-20KHzBattery capacity: 160 mAhPlay time: 8-10hCall time: 10-12hPrinciple of Earphone Voice: Moving CoilConnection between left and right chambers of headphones: wireless connectionDust-proof properties: IPX4Connection mode between headset and playback device: Bluetooth connectionPatents: Energy-accumulating Bile Cavity, Humanized neck hanging linePackaging size: 145 mm*100mm*40 mm/5.7*3.93*1.57''Packing weight: 142gNote: Please allow 1-3cm differs due to manual measurement.Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding.