The cassette Walkman was the first low-cost , portable music player . Final batch was shipped to Japanese retailers in ninth anniversary . first generation Walkman was released on April in Japan . Once these units are sold , new cassette Walkmans will no longer be available through the manufacturer . Announcement delivered just April of the Sony 's ninth anniversary .
The cassette Walkman was the first low-cost , portable music player . Final batch was shipped to Japanese retailers in ninth anniversary . first generation Walkman was released on April in Japan . Announcement delivered just April of the Sony 's ninth anniversary .