Technical features: Wireless connection via Bluetooth V4.0 and NFC technology, offering a broad frequency response and deep bass. Adoption of internationally rated-rated CSR 4.0 APTX chip, which has been tested by CSR Company. Works stably via Bluetooth within 10 m distance free of signal interference. Functional advantages : Control the music and phone calls via the buttons on headset and switch freely. Work perfectly with all kinds of mobile phone and tablet to give you high-fidelity music streaming. No longer relying on the battery, you can have an extra-long listening experience with easy and rapid charging via the USB cable. Construction features: Superior soft leather and aluminum structure and rotatable around-the-ear design guarantees you long-lasting comfortable use. ? Foldable and portable design makes it optimal for business person and travelers that are always on-the-move. Product specifications: Built-in Lithium battery: 3.7V/500mAh Talk/Music time: 24hours Stand by time: 30days Charging time: 4hours Bluetooth frequency: 2402MHZ-2480MHZ Transmission range: 8-10 m Horn diameter: 40mm Horn impedance: 32ohm Frequency response: 20-20KHz MIC Specification: 6*2.7mm MIC Sensitivity: -52dB MIC Directivity: Omni-directional MIC Frequency response: 100Hz-8K Hz Packing list: Bluetooth Headset x 1 USB Cable x 1 User Manual x 1
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