DC-Thunder  Bluetooth Wireless Neckband with additional Features: Unique ring-necked design, opening up a new era of Bluetooth, Ultra-light elastic memory material, easy to carry, High-fidelity stereo audio earphones enjoy entertainment, Intelligent noise reduction, clearer calls, Long standby, long call. Compatible with standard Bluetooth- enabled mobile phone, media devices. Answer/end/reject a call. Last number redial, voice dialing, transfers a call, call waiting,Dual pairing and memory card option for sports activities.                                                                                                                Specifications: - BT 5.0, Battery: 3.7V/ 500mAh, Charging time: <2 hours, 65 hours backup ,Best for Running, Gyming & other Outdoor Activity.