Brand Name : Zeblaze Connectors : USB Control Button : Yes Active Noise-Cancellation : Yes Style : Ear Hook Communication : Wireless Vocalism Principle : Dynamic Volume Control : Yes Wireless Type : Bluetooth Codecs : NONE Support Memory Card : No With Microphone : Yes Model Number : A2 tws Resistance : 6Ω Frequency Response Range : 20-2000Hz Function : For Mobile Phone Sensitivity : 85±3dB Waterproof : Yes Is wireless : Yes Line Length : None Plug Type : Wireless Support APP : No goods : A2 tws compatible for : Iphone Samsung Huawei Xiaomi style : Bluetooth Earphone item : Wireless Headphone item2 : Gaming headset item3 : Bluetooth Earphones Function 1 : 8D Stereo Function 2 : Auto pairing