TRUE STORE :Bluetooth 4.1 with EDR. Supports HFP 1.6, HSP 1.2, AVRCP 1.4 and A2DP 1.2 Bluetooth profiles. CVC6.0 intelligent noise reduction. Stereo sound. 3 meters range. Charging time of 2 hours with around 100 hours of standby and 3.5 hours of usage time. Pairing instructions: power on and enter paring mode (Press the power on button for 5 seconds until the blue and red LED light quickly flash alternatively with paring voice). Use a Bluetooth function mobile phone or other Bluetooth master device. Try to search the device and connect it with connected voice. Press the power on button once while the call is coming/end call.Hi quality bluetooth headphones. Bluetooth Headset Hi Fi Stereo sound quality with strong anti-interference ability. Wireless Bluetooth headset is well designed fashionably, smart and portable, pure acoustic and multi-functional. We have patents for the whole series of our Bluetooth Headset are applied with the top advantage electro-acoustic technology, providing you the best enjoyment of music any time, this Headset provides the perfect acoustic with your notebook and any digital audio devices. Its an essential gadget to enjoy your