These had new, short, smoothbore barrels ( 35 mm / 1. 375 inch ), with. 40 " / 10mm bore, and with cylinder chambers reamed to accept special QSPR ammunition which externally resembled metal-cased. 410-gauge shotgun shells but internally worked as a piston to trap the gases.

The " acorn " valve ( named due to its shape ) was also very small, as was the metal-cased nuvistor, about the size of a thimble.

Although the 6S-series tubes are often metal-cased, the 6SN7 was mostly made in a GT size glass envelope.

Red Bull is sold in China in two versions: a regular-strength version in a short, wide, gold-and-red can ; and an " extra-strength " version in a taller, thinner, blue-and-silver can more like the cans sold in western countries.

Walkman TPS-L2 ( 1979 ) with the breakthrough technology of affordable portable ' STEREO '

In 1979, the Walkman was introduced, making it the world's first portable music player.

In March 2007, Sony extended the brand by launching its first all-digital, flash-based video Walkman, the A800 series, where A stands for " All in one, Advanced, and Attractive ".

The last play-only cassette Walkman to be introduced ( in North America, at least ) was the WM-FX290, first sold in 2002, which also featured digital tuning, AM, FM, TV and weather band radio, operating on a single AA battery.

The first CD based Walkman, the D-50 ( D-5 in some markets ), was initially launched in 1984.

It was also the first Symbian OS-based Walkman phone to be introduced.

It was the first Walkman phone in the series in a " flip phone " form factor.

The W300 was also the first Walkman Phone to support Memory Stick Micro and features a VGA camera.

May 18, 2006, saw the introduction of two more Walkman phones, a second clamshell model, W710, and the first slider, W850i.

** The Sony Walkman goes on sale for the first time in Japan.

To consumers familiar with the earphone-listening experience of the transistor radio, the first Sony Walkman cassette player, with a pair of high-fidelity stereo earphones, would provide a greatly contrasting display of audio fidelity.

When TCA first introduced the FasTrak system, the electronic transponders consisted of a gadget about the size of a Walkman in which a smart card was inserted.

According to the show, the Post-it notes were first sold in 1980 and the Walkman was first sold in 1979.

The first truly personal cassette player, the Sony Walkman, was introduced in 1979 and sold very well.

Its original orientation was toward contemporary folk music — notably Billy Bragg, and Michelle Shocked's Texas Campfire Tapes, recorded on a Sony Walkman, one of its first releases.

On their first single and EP for the label, 1992's " Dime Map of the Reef " and 1993's The Arizona Record, respectively, the band held to their ultra lo-fi aesthetic and recorded the majority of both on a Walkman.

Though supposedly set one year before the first Amityville Horror film, Amityville II is full of elements that are clearly from the 1980s, such as a miniature " Walkman " radio / headphone set and the presence of 1982 cars, televisions, etc.

The Sendo X2 was the first " music mobile " announced ; a good six months before Sony Ericsson announced the W800 Walkman phone.

Japanese companies have been responsible for a number of important innovations, including having pioneered the transistor radio and the Walkman ( Sony ), the first mass-produced laptops ( Toshiba ), the VHS recorder ( JVC ), and solar cells and LCD screens ( Sharp ).

The W800 Walkman, released in 2005 ( 2 August 2005 in the UK ), was the first Sony Ericsson phone to use the Walkman brand.

Some users experience a high level of background hiss and quantization noise when using the Walkman feature at low volume levels, a problem that first appeared in a firmware update.

In 1984, Sony launched the Discman series which extended their Walkman brand to portable CD products.

Walkman is a Sony brand tradename originally used for portable audio cassette players, and now used to market Sony's portable audio and video players as well as a line of former Sony Ericsson mobile phones.

The names " Walkman ", " Pressman ", " Watchman ", " Scoopman ", " Discman ", and " Talkman " are trademarks of Sony, and have been applied to a wide range of portable entertainment devices manufactured by the company.

Sony continues to use the " Walkman " brand name for most of their portable audio devices, after the " Discman " name for CD players was dropped in the late 1990s.

The Walkman Professional had bright LED recording level meters and manual control of recording levels which were unique features not found in other portable units.

In late August 2007, Sony released an email to customers of its Online Music Store ( Connect ) stating that Sony would shut down the service and begin to phase out the ATRAC codec on any future version of the Walkman portable device.

During the 1980s, the cassette's popularity grew further as a result of portable pocket recorders and high-fidelity (" hi-fi ") players, such as Sony's Walkman ( 1979 ), which used a body not much larger than the cassette tape itself, with mechanical keys on one side, or electronic buttons or display on the face.

Sony WalkmanLike the transistor radio in the 1950s and 1960s, the portable CD player in the 1990s, and the MP3 player in the 2000s, the Walkman defined the portable music market in the 1980s, with cassette sales overtaking those of LPs.

At the introduction stage, a manufacturer ( Sony ) trail-blazes a new product ( a portable cassette player with the trademark name " Walkman ") with the most basic feature set ( play, pause, stop, fast forward, rewind, eject ) in order to engage the consumer and support use and acceptance ; meanwhile, competitors " wait and see " if the product will create a market worth investing in.

During the 1980s JVC briefly marketed its own portable audio equipment similar to the Sony Walkman on the market at the time.

Other Sony products to feature OLED screens include the MZ-RH1 portable minidisc recorder, released in 2006 and the Walkman X Series.

Sony introduced the smaller, and now widely used, 3. 5mm " minijack " stereo connector in 1979, adapting the older monophonic 3. 5mm connector for use with its Walkman portable stereo tape player.

FM radio ( aided by the development of smaller portable radios and " Walkman " headsets ) dominates music programming, while AM has largely shifted to talk and news formats.

Because of its portable nature and similarity to the Walkman, the nickname ' Discman ' was given to the D-50.

Andreas Pavel ( born in 1945 ) is a German-Brazilian inventor who is the ' father ' of the portable personal stereo cassette player, better known as the Walkman.

The name refers to its shape, which was modelled after a jellybean, and its ancestor, the original Sony Walkman portable cassette player.

The name " Talkman " is a reference to Sony's Walkman line of portable audio products.