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Seiko, SII and Epson logos. Three companies share "Seiko" in their official names but have different corporate visual identities.. Seiko Group (セイコー・グループ, Seikō Gurūpu) was a Japanese corporate group consisting of three core companies Seiko Holdings Corp. (Seiko; f/k/a K. Hattori & Co., Hattori Seiko), Seiko Instruments Inc. (SII; f/k/a Daini Seikosha, Seiko Instruments ...
Some Grand Seiko timepieces also incorporate the company's Spring Drive movement, a movement that is a combination of both automatic and quartz timekeeping methods, leading to unparalleled accuracy in the world of automatic wristwatches. The most famous example is the SBGA011 Grand Seiko "Snowflake", housing the 9R Spring Drive movement. With ...
Admiral radio-phonograph, c. 1950, at the Lamar County Historical Museum. In 1934 in Chicago, Illinois, Ross Siragusa founded Continental Radio and Television Corporation (CRTC), which produced consumer electronics such as radios and phonographs. [1] The radios were designed and produced by Radio Products Corporation (RPC), owned by Irwin J ...
SounLink Max can play music for up to 20 hours, and if the mobile’s battery start to run low, the USB-C port can charge the mobile device. It comes in Black or Blue Dusk color. It uses Bluetooth 5.3 and supports SBC and AAC codec standards. For HD audio, it uses Snapdragon Sound, which automatically adapts up to lossless quality.
The first digital watch was the Pulsar, introduced by the Hamilton Watch Company in 1972. The "Pulsar" became a brand name, and would later be acquired by Seiko in 1978. In 1982, a Pulsar watch (NL C01) was released which could store 24 digits, likely making it the first watch with user-programmable memory, or the first "memorybank" watch.
A "Wave Radio/CD" model was introduced in 1998 and was essentially a Wave Radio I with a CD player. The end of the waveguides were tapered by 2%. [ 7 ] Unlike the Acoustic Wave, the Wave Radio could be used as an alarm clock radio, and featured two independent alarms, which could be set to A/M or F/M radio, a buzzer, or a device plugged into ...
The first grounded bridge product released by Crown was the M600 amplifier (1974) primarily employed for commercial sound installations including constant voltage loudspeaker systems. [8] Crown received a patent for the invention in 1974. [9] After proving itself in the field, the topology was used to design the Microtech MT-1000 in 1984. [7]
Amplifiers increase the power level of audio signals. Some head units have built-in stereo amplifiers. Other car audio systems use a separate stand-alone amplifier. Every amplifier has a rated power level sometimes noted on the head unit with the built-in amplifier, or on the label of a stand-alone unit.