Product information: 1. drive: 15mm, impedance: 32 OHM 2. Bluetooth version: Bluetooth v4.1+EDR 3. Bluetooth frequency band: 2.4GHz 4. power level: CLASS II, output power: 30mW 5. Bluetooth distance: obstacle free 10 meters 6. frequency response: 20-20000Hz 7. working voltage range: 3.0V-4.2V 8. head sensitivity: -42dB 9. have A2DP /AVRCP high quality stereo audio transmission and remote control protocol 10. powerful noise canceling circuit (active noise reduction) 11. switch between English and Chinese (boot is not connected to Bluetooth status, and press switch 2 times to hear prompt tone switching successfully) Package include: 1 x HBQ i7 Bluetooth headset 1 x USB cable 1 x Manual Colors: Black,white,gold,red,pink. PS:Please tell us the color you need, otherwise we will randomly delivery, thank you!
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