Wireless Bluetooth Headset Music Headphone Portable BT4.1 Stereo HIFIColor: Black Silver/White Silver/ Black Gold/White GoldMaterial: ABSBluetooth version: bluetooth V4.1, support protocol handle\handfree\A2DP\AVRCPEmission function: Class 2 (-6dbm - 4dbm)Communication distance: 10 meters (barrier-free)Working frequency band: ISM band (2.402-2.480GHZ)Charging voltage: 5VOperating voltage: 3.7VBattery Specifications: Rechargeable Polymer Lithium Battery (401035/120MAH)Speaker impedance: 16±15%ΩSensitivity: 95+/-3DBFrequency range: 50-20KHZRated output power: 3mW×2Maximum output power: 5mW×2Speaker size: 10×4.6mmMicrophone size: 4×1.5mmMic sensitivity: -42+/-3dbPower-on pairing: Press and hold the MFB button for 4 seconds. The red and blue LEDs flash alternately to enter the pairing state.Create value for customers. Together with operators, they have built more than 1,500 networks around the world, helping connect more than one-third of the world's population. Cooperate with partners to provide open, flexible and secure ICT infrastructure platform for end-pipe cloud collaboration for government and public institutions, finance, energy, transportation, manufacturing and other enterprise customers, and promote the digital transformation of the industry; To provide cloud service customers with stable and reliable, safe and reliable and sustainable evolution of cloud services. Smart terminals and smartphones are helping people enjoy high-quality digital work, life and entertainment experiences.We will promote sound industrial development. We advocate openness, cooperation and win-win, cooperate with customers and partners, expand industrial value, and form a healthy industrial ecosystem. Join more than 360 standard organizations, industry alliances and open source communities, actively participate in and support the formulation of mainstream standards, and build a win-win ecosystem. We focus on cloud computing, NFV/SDN, 5G and other emerging hot areas, and work with industrial partners to promote sustainable and sound development of the industry.Promoting economic growth. It will not only bring direct tax contributions to the country, promote local employment, and form a driving effect of the industrial chain, but more importantly, build a digital engine through innovative ICT solutions, promote the digital transformation of all industries, promote economic growth, and improve people's quality of life and well-being.Promoting sustainable social development. As responsible corporate citizens, we are committed to bridging the global digital divide. Promoting the green and low-carbon environmental protection concept, huawei provides customers with leading energy-saving and environmental protection products and solutions from product planning, design, research and development, manufacturing, delivery and operation and maintenance. The seeds of the future project has been launched in 108 countries and regions to help nurture local ICT talent, promote knowledge transfer, increase understanding and interest in the ICT industry, and encourage countries and regions to participate in building digital communities.Provide a stage for strivers. Adhere to the "based on striver" to responsibility to contribute to evaluation and selection of cadres employees, provide employees with the globalization development platform, the opportunity to dialogue with the world, make a lot of young people have the opportunity to play, fast growth, also makes the ten employees through personal efforts, gain the reasonable reward and memorable experience.A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A A