The unibody model debuted in October 2008 in 13- and 15-inch variants, with a 17-inch variant added in January 2009. Called the "unibody" model because its case was machined from a single piece of aluminum
Headphones
In early powered radios, the headphone was part of the vacuum tube's plate circuit and carried dangerous voltages. It was normally connected directly to the positive high voltage battery terminal, and the other battery terminal was securely grounded.
         Samsung         
         
                  MacBook Pro Laptop M2 Pro chip with 10‑core CPU
                        
         
         
            
         
         
         
         
         
         
                
         
            
         
                  
         
      
      
            299,00 $
                                               
            
            
         
                  
         
                     
                  
         
      
         Samsung         
         
                  Bose Sound Link Micro Water Proof Wireless Bluetooth Portable...
                        
         
         
            
         
         
         
         
         
         
                
         
            
         
                  
         
      
      Your speaker is waterproof, splash resistant, and dust proof. It is rated IP67 and IP64. You can immerse the speaker in water for up to 30 minutes at a depth of up to 3.3 ft (1 m). It can also be used while showering and in the rain or snow.
            189,00 $
                                               
            
            
         
                  
         
                     
                  
         
       
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