Nady U-2100 LT/O (BAND A/B) UHF Dual 100-Channel Wireless Lavalier Handheld Microphone System100 selectable frequencies; Selected channel stored in memory for subsequent use; Clear channels selectable with Autoscan; Rugged all ABS housing; Operating freq range: Channel B 505MHz 529. 75MHz; Frequency synthesized PLL (100 channels selectable) 250kHz step; PLL system freq stability: Length: 14. 10" Width: 11. 90" Height: 3. 00" Note: Ship only in US;