Brand Name : QCR Connectors : None Control Button : Yes Active Noise-Cancellation : Yes Style : In-Ear Communication : Wireless Vocalism Principle : Dynamic Volume Control : Yes Wireless Type : Bluetooth Codecs : SBC Support Memory Card : No With Microphone : Yes Model Number : TWS-G02 Resistance : 32Ω Frequency Response Range : 100-10000Hz Function : For Internet Bar Sensitivity : 110±4dB Waterproof : Yes Is wireless : Yes Line Length : None Plug Type : Wireless Support APP : No Charging box battery specification : 3300 mAh Bluetooth : 5.0 Earbuds waterproof level : IPX7 (shower,Snorkeling,Rain, sweat) earphone battery capacity : 60mAh*2 earphones play time : 5-6 Hours Earbus standby : 90 H Compatibility : for iOS Android Smart Phone Smart tablet Compatiblity : For iPhone Sumsung Xiaomi Huawei, LG, Google ect Phone Charging time : 1~2 hours Wireless earphone model : TWS Bluetooth earphone handfree G02