Wireless transmitted stereo music via Bluetooth adapter (acoustic devices like iPod, PSP, MP3, Hi-Fi). Support A2DP mobile phone. The mobile phone can be transmitted stereo music directly. No need the Bluetooth adapter. Foldable design, easy to carry. Human-based design, suitable for long time use. Noise cancelling technology. Frequency: 2.4GHz-2.48GHz. Transmission power: Class2. Transmission distance: 10M. Charging time: 3.5-3H. Listen music time: 10 H. Talking time: 12H. Standby time: up to 200H.
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