I'm with everyone else on the patent. How long has the V1 been out? The patent should run out in 7 years so maybe it's not too long before another is available. Until then my $140 Whistler will be fine. 
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1987 928S4 Silver Metallic (980)/Navy (TP) 5-Speed
2000 Boxster Speed Yellow/Black 5-Speed
1966 Wife White/Brown Top
1986 Daughter White/Brown Top (Sold!)
1992 Daughter White/Blonde Top
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