Toshiba, Acer and Lenovo have launched a series of lightweight laptops combining notebook, smartphone and tablet capabilities.
Launched at the IFA consumer electronics show in Berlin, the three manufacturers said the lightweight laptops are aimed at business and consumer users.
Acer's Aspire S3 provides 50-day battery life and includes Acer's "Green Instant On" feature.
Campbell Kan, president of Personal Computer Global Operations at Acer, said: "The Aspire S3 is truly designed to meet notebook users' needs, combining essential features of the smartphone and tablet PC, such as fast start-up and internet connectivity, with long battery life."
Toshiba also launched a series of lightweight laptops, called Portégé Z830. Toshiba said the range is 20% lighter and 40% thinner than its Portégé R830 series. Toshiba said the devices met work and entertainment performance needs for business professionals and consumers.
"The Portégé Z830 series sets a new standard for thin and light systems, not just in portability, but also in affordability for such cutting-edge designs," said Carl Pinto, vice-president of product development at Toshiba.
Lenovo said its IdeaPad U300s, U300 and U400 lightweight laptops featured rapid battery re-charging, Intel's Core i7 processor and HD display and up to 256GB of SSD storage.
Mooly Eden, vice-president and general manager of Intel's PC Client Group, said the Lenovo ultrabook category combines "a no-compromise, must-have mobile experience with performance, security, responsiveness and style."
The IdeaPad ultrabooks start at $849.99 and will be available from November 2011.