Grounded Mac AC Wall Adapter

This is a 3-prong grounded "Duck Head" adapter for Apple power supplies. Compatible with MacBook and iPad chargers with removable duck head. This is the only duck head on the market that fully grounds your computer. This means that the case of your MacBook will be fully connected to electrical ground when using. This has many benefits: it eliminates the annoying buzzing feeling felt on the MacBook in some situations. It also creates a much firmer connection to the wall, preventing your adapter from slipping out. It's also safer, especially when working in sensitive areas like medical facilities or around sensitive electronics. Also, as your palms rest on the computer, your entire body will be grounded or "earthed", which some claim has health benefits. Plug Duckhead 3-pin US Charger Duck Head for MacBook Mac iBook/iPhone/iPod AC Power Adapter Bric

• The only fully grounded duck head! Fully compatible with all Apple chargers with removable plugs, including all MacBook chargers. Works in any US or North America socket.
  
• Prevents annoying buzzing felt on the case of your MacBook
• Won't slip out of the socket. 
• High quality. We took extra care to build our product to the top quality. Compared to competing 2-prong duck heads, our ultrasonic weld is extra strong, preventing the duck head from breaking and creating a safety hazard.
• Grounds or "earths" your body whenever you use your computer! Good for health.
• Prevents stray currents when working near sensitive electronics, laboratories, or medical environments.
• 100% Guarantee. If you're not happy for any reason, we'll make it right or give your money back!