Special Offer Available: www.amazon.com — New RDX 2 Watt Business Walkie-Talkies replace and work with XU models. 30% louder audio to hear in noisy workplaces. Speaker has low magnetic field to greatly reduce attraction of metal shavings. RDU2080d displays battery life and name of user and different work groups. Covers up to 250000 sq ft and 20 floors. New RDX 4 Watt Business Walkie-Talkies replace and work with AXU models. Same features as 2 watt models above. RDU4160d displays battery life and name of user and different work groups. Covers up to 300000 sq ft and 30 floors.