550 works fine on a bike in all conditions.
I have a number of friends who ride with them.
When my 2720 lets go, I will be looking for a 550 or something like it.
	
		
			
		
		
	
				
			I have a number of friends who ride with them.
When my 2720 lets go, I will be looking for a 550 or something like it.
 
	 
  
  
  
  
  
  
  
  
 
		
 
 
		 
 
		 
 
		 
 
		 
  
  
  
  
 