Wackolee SF-888 Bluetooth Headphones Best Earphones Headset Stereo with In-line Microphone Wireless Portable Foldable and Adjustable for SmartPhones ipad mp4 HiFi Players (Black-Red) Bluetooth 4.0 Stereo Headphones;Built-in microphone Allows clear Phone communication; Enables use as a headset; Music and phone controls ensure ease of use HiFi - Luxury - Stereo - Sports - Wireless Bluetooth - Portable - Foldable - Comfortable - Over the head Circumaural design contours around the ears for excellent sound isolation in loud environments Built-in rechargeable lithium-polymer battery With Li-battery enables up to 9-10hours of talk time or audio playback, Standby time up to 180 hours.3.5 mm AUX line in - Allow music playback from various sources even when not charged What's in the box: On-ear headphone, 3.5 mm AUX Cable, USB Cable, Carrying case