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.
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
Complete any room with Alexa. Our most popular smart speaker has a sleek, compact design that fits perfectly into small spaces. It delivers crisp vocals and balanced bass for full sound you can enjoy anywhere in your home.
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.