AresX Freedom 1.0 Wireless Bluetooth Sport Headphones (Black) Wireless Bluetooth 3.0+EDR Technology with a 33 ft. range, compatible with all Bluetooth enabled smartphones. The lightest Bluetooth headphones available, only 17.2g! Fits around the back of the neck. So light and comfortable, you will forget they are on! Built in microphone for calls on the go with Call / Answer feature. Control music with Play / Pause / Stop multi-function button. Includes a Micro USB charging cable and and 2 sets of plastic earbud protectors. Rechargeable battery with 100 hours of stand-by time and over 5 hours of music or talk time.