GoMax QY7 Mini Lightweight Wireless Stereo Music & Talk Sport Running Gym Exercise Cycling Bluetooth Headphones 4.1 Cordless Earbuds Headset Earphone Earpiece Mic Dual Pairing This Bluetooth headphone using the latest version 4.1+Apt-x audio codec+cvc6.0 Noise reduction technology to give us perfect stereo sound Sweat proof, noise cancellation, stereo wireless Bluetooth headphones make you enjoy your music, calling when you are running Enjoy 4 hours play time, fast charging time(about 2 hours), long standby time(about 145 hours), 10m working range and size for l40*w24*h32mm How to pair the device: Turn on the device by pressing the on/off button and holding it down for more than 5 seconds. The device will alternate between red and blue LED lights,(which means it's in pairing mode) Open your mobile device and look for QY7 bluetooth device to pair it. Packing:Includes 1*qy7 sport bluetooth headphones+1* USB charging cable+6*ear rubber+6*ear hooks+1*user manual These earbuds include S/M/L ear tips and two types of different ear hooks to ensure a comfortable and secure fit for everyone. With specially designed ear hooks, you will never worry about the ear buds falling off in a gym or workout again.