The 655 series features:

• Diaphragm only type chestpiece fabricated from lightweight acrylic provides up to twice the amplification of conventional acoustic scopes
  
  
• No electronics to malfunction, no batteries to wear out
  
  
• Lightweight scope is neither bulky nor awkward to use
  
  
• Stainless steel binaurals with double leaf internal spring fixed at 15° angle for greater comfort
  
  
• Reinforcing yoke molded into flexible 22" PVC “Y” tubing
  
  
• Adsoft™ deluxe PVC eartips in small and large sizes for the ultimate in wearing comfort and acoustic seal
  
  
• Weighs 5 oz
  
  
• Overall length 31.5"
  
  
• Scope ID Tag included
  
  
• Eight printed designer diaphragms included for personalizing
  
  
• Lifetime Warranty on metal parts
  
  
• Five Year Limited Warranty