BEYLEG(TM)Bluetooth 4.1 Wireless Sport Headphones Sweatproof Running Gym Exercise Bluetooth Stereo Earphones with Microphone High-fidelity Stereo Sound Noise Cancelling Mic for Smartphones BE-66(Red) Top-Brand Bluetooth Accessories for Smartphones Unique Design Guarantee 100% Stable and Comfortable User Wearing Experience for Running,Jogging,Biking,Driving,Fishing,Camping,Hiking and other Outdoor Sports. The Most Advanced Bluetooth 4.1 Chips Hardware Configuration Ensure Hi-Fi CD Quality Stereo Music Sound and Strong Signal. Leading apt-X Tech Can Provide No-lag Voice when Listening to Music or Calling with Mic. Extra-long Battery Life Allows You Enjoy Up to 5 Hours Talking/Playing Time + 180 Hours on Standby Wireless and humanized for you. Connect to 2 phones simultaneously. Voice command say"Yes"or"No"decide whether to pick a call; Press MF button 2 seconds, then release, to activate voice assistant of mobile phone, e.g. Siri(Phone feature); last but not the end, press MF button and Vol(-) simultaneously to choose voice promts(Chinese/English).