Free yourself from your desk with the perfect entry-level Bluetooth wireless headset. Included: carrying case, BT700 USB adapter and charging cable. Charging cable length: 1.5m/4.9ft. Wireless range up to 50m/164ft. Up to 24 hours of conversation time. Dual microphone acoustic fencing technology eliminates background noise. Several device connections are at hand: PC/Mac, smart phone, desk phone. 2-year warranty. Black.