ポータブルMDプレーヤー市場は2000年度の総需要見込330万台と,ヘッドホンステレオ･ポータブルCDなど総需要見込800万台を越えるポータブルオーディオ商品の中で,現在40%超の構成比を占めるまで成長し,; The expansion to becoming the maximum category is expected.;
In such a situation and former model SJ-MJ75 are gotten the evaluation with a high essence function of portable MD player named "Lightness and compact" and "Reproduction for a long time", and change well. The essence function is pursued further, and then, SJ-MJ77 put on the market at this time is a minimum in the world and the lightness. ^{- Compact body of one} and continuous reproduction of about 65 hours^{- Two} was achieved, and easiness to use was improved by new (*ijekt*) mechanism "Smart change" that the disk exchange is easy. Additionally, model for our company MD minicomponent/MD system (MD network^{- [It] corresponds to "MD network" to be able to do the edit which includes the title data like double MD by operating it from the MD minicomponent by the thing connected with 4}).
Moreover, world the 薄(unknown word). ^{- Four color lineup as which the adoption and the color of the see-through liquid crystal remote control where three} shines can be chosen and the commodity intended for a wide layer regardless of the man and woman around the young man. *** Total demand is <(> <our company> <expectation>)

1. Minimum in the world and the lightness^{*** Reproduction for a long time for about 65 <-1}&> hours^{- Two} is achieved.
   In the development of the combinations chassis with which the aluminum of an adoption of the disk folder which refurnishes the link mechanism of the division method and a different material and stainless steels are on the whole molded, smaller surface area (71.5mm×78.5mm) than the MD jacket and thickness are minimum in the world with 12.7mm. ^{- One} is achieved. The mass of the main body is also the lightest in the world. ^{- About 60g of one} was achieved. Moreover, the reproduction time can continuously be reproduced for about 65 hours by using together about a rechargeable battery and the alkali dry battery of the attachment.

2. "Smart change mechanism" to be able to do disk exchange easily
   The disk is drawn in when (*futa*) is closed even if [it] does not completely push it into the interior when the disk is inserted, and new mechanism "Smart change" from which the disk dashes out only by doing the opening button in the slide is adopted when taking it out.
   The disk is gripped easily, and it is possible to exchange it more easily.

3. World the 薄(unknown word)^{- See-through liquid crystal remote control attachment where three} shines
   The liquid crystal part can be transparent, the seen see-through liquid crystal remote control be installed, and the display be confirmed with slide shutter type EL backing light even in a dark place. Moreover, 7.7mm in thickness and world the 薄(unknown word). ^{- Three} is achieved and operativeness improves with the independent operation button, too. Portable high quality in a fashionable design MD is produced.

• For MD network
  Everything from MD to MD which contains the title data can be easily edited in a double MD sense in the connection with the MD minicomponent/the MD system of our company MD network correspondence. Moreover, an original label which prints the title of MD with the reflection can be easily made if [it] connects it with visual/the title printer.
• Newly developed high pitched sound quality inside phon)(ugly headphone code adoption from anti-bacterium material/
• Memory 振(unknown word) for 20 seconds when 音飛び(unknown word) is prevented from shock
• Equipped with "Train position" by which sound (*more*) of heavy bass circuit S-XBS and headphone is suppressed
• Remote control for joint phon
• The battery remainder amount display (remote control part)
• For reproduction mode of monaural length time
• No lead はんだ(unknown word) which considers the environment is adopted for the main body print substrate.