Hype Active Sport Bluetooth Wireless Rechargeable Stereo Earbuds w/Microphone (Black/White) Bluetooth v3.0, Frequency: 50-20kHz, Rechargeable Lithium Ion battery Operation range: up to 33 feet, Play time: up to 4 hours, Talk time: up to 5 hours Comfortable and lightweight Secure in-ear fit Tangle free design Pack of one