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Popular Recommendations Bluetooth headphones are compatible with various Bluetooth hats and are our company's patented product, with relevant product certificates. Welcome Consult Q or Wangwang Bluetooth earphones Product Certification Function Port Description 1.Power button/phone call answer/pause/play button 2.Volume up button/Next track button 3.Volume down button/previous track button 4.Microphone hole 5.USB charging port Product Features 1. Bluetooth version 4.1 2. Supports Bluetooth calls and Bluetooth music 3. Low-power consumption with high-quality stereo sound effects 4. Built-in lithium-ion battery, with MICRO USB charging function 5. LED light indicates the working status 6. Suitable for a wide range of users with simple operation and settings Product Specifications 1. Wireless transmission distance: CLASSⅡ 10M 2. Battery capacity: 160-300mAh 3. Frequency range: 20-20KHZ 4. Sensitivity: 95DB 5. Impedance: 32Ω 6. Speaker size: 32MM 7. Charging time: 2 hours 8. Battery: 180mA polymer lithium battery 9. Bluetooth search name: BT-01