Bluetooth V4.1Bluetooth V4.1 improves over the past version with quicker response and lower frequency. The earbuds with built-in microphone support hands-free calling. Beyond PerformanceZIOFEN bluetooth headphones let you enjoy great sounds. Specially designed ceramic antenna improves signal strength. Stereo SoundWork out and stay fit with clear, natural sound that drives you forward. Your music becomes smooth without noise or breaks. Specifications: Product: ZIOFEN Bluetooth HeadphonesOperation Range: 33 InchStandby Time: 120 HoursCall Duration: 4-6 HoursPlaying Time: 4-5 HoursCharging Time: 2 HoursBattery Charging: DC 5V 500mASensitivity at 1KHz: 95±3 dBFrequence: 20Hz-20KHzSignal-to-noise: 93 dBDistortion: Cable Material: Dural Nylon CoverCable Length: 580±10mmPackaging Inclus: 1x ZIOFEN Bluetooth Headphones3x Earbuds1x USB cable1x Storage bag1x English User Manual
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