Antec BXR-100 PUR Gain Bluetooth Receiver: * Integrated microphone and audio controls * Standby Time (Pairing with Mobile Phones): 140 hours * Operating Time: 6 hours * Frequency Band: 2.4-2.48GHz unlicensed ISM band * Bluetooth v2.1+EDR * Effective Range: 30" * Battery Capacity: 3.7V (90mAh) * Color: Purple