Bluetooth Headphones - August EP640 - Wireless Over Ear Headphones with aptX/NFC/3.5mm Audio In/Headset Microphone - Red Bluetooth V4.1 Wireless Headphones with NFC - Listen to audio from smartphones and tablets Built-in Microphone - Stay connected to your phone with hands free calling Music, Volume and Calls control Buttons - Answer calls & control your music Internal Li Ion Battery - Rechargeable battery gives up to 10 hours between charges 3.5mm Standard Audio In Socket - Connects to any non Bluetooth device