While Galaxy Gear, which came ahead of an expected smartwatch from Apple, is aimed at shaking-off criticism that it has been a follower rather than an innovator. Samsung also unveiled the Galaxy Note 3, a slimmer and lighter version of the Note 2.
The latest device from the world's top handset maker will run on Android 4.3.
Unveiling the latest devices at a trade show here, Samsung said Galaxy Gear will go on sale for USD 299 from September 25 across the world including in India.
"We will be launching Note 3 and Gear in 149 countries on September 25. In the US and Japan we will launch it in October," Samsung Electronics' Marketing manager David Park said here last evening.
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The Galaxy Gear, which has a 1.6-inch screen and weighs 2.6 ounces, has a 1.9 megapixel camera embedded in the strap and a built-in speaker that allows users to conduct hands-free calls. Besides photos and hands-free calls, it can perform functions like instant messaging.
In June, Sony Corp unveiled its own Android-based smartwatch expected to start selling this month.
The new Galaxy Note, which is slightly larger than its predecessor, is better equipped for multitasking, Samsung said, allowing users to open multiple frames at once. It also has a stylus, called the S Pen.
Galaxy Note 3 has a 5.7 inch Super-Amoled screen and weighs 168 grams.
"For the first time we have given Galaxy Note 3 a warm texture-touch cover," JK Shin, President & CEO Head of IT and Mobile Communication Division at Samsung Electronics said. "It is slimmer, lighter, and more powerful. All in a beautiful design."