AMINY BH35 Wireless Bluetooth Stereo Headphones Noise Cancelling with Microphone Sports Running Gym Exercise Sweatproof Earbuds Headset - Green Bluetooth 4.1 In-ear Type Earphone Transimission Range: 10 Meters Speaker Size: 8mm Microphone Size: 40*25mm CVC 6.0 Intellegent Noice Reduction