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Product type Headphones Ear wearing styles Functional use Bluetooth headset on Music Unit diameter 5.8mm Frequency range 10-20000Hz Product impedance 15 ohms THD <0.5% (at 100dB SPL, 100Hz to 10000Hz) Function parameter: Bluetooth support Bluetooth version 3.0 Bluetooth Micro USB charging port Battery capacity 125mAh 9 hours talk time 650 hours standby time Microphone parameters: There are microphones Wired remote support Weight 15.8g