Amerzam Bluetooth Headphones 4.1 Earbuds Wireless Sports Headset Stereo Headphones with Mic, Black Amerzam Bluetooth headset using version 4.1+Apt-x audio codec+cvc6.0 Noise reduction technology to give us perfect stereo sound. Connectivity Technology: Wireless Sweat proof, noise cancellation, stereo wireless Bluetooth headphones make you enjoy your music, calling when you are running Enjoy 5 hours play time, fast charging time(about 2 hours), long standby time(about 175 hours), 10m working range and size for l40*w24*h32mm *Use for iPhone 6s plus, 6s, 6, iPad, Samsung galaxy, android smartphones and tablets, windows devices and all popular Bluetooth devices , *Packing:1*amerzam sport Bluetooth headphones+1* USB charging cable+6*ear rubber+6*ear hooks+1*user manual