The Samsung Gear S is, amazingly, Samsung's sixth smartwatch in a year. What makes it different? Screen and 3G.

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The 2-inch 360x480 curved AMOLED screen feels like a super-sized Gear Fit. It's wide, but very vivid.

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There's plenty of room for notifications.

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The strap snaps together like Samsung's previous Gear 2 watches.

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We checked out a Gear S with white rubber strap. It pops into the band accessory, as opposed to a regular watch's individually-attached straps.

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A look from the side shows its thickness.

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The snap-on battery charger also doubles as its own battery: a 350 mAh battery inside tops off your Gear S on the go.

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The Gear S runs Tizen, including the apps that launched for Gear 2 and Gear 2 Neo.

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Browsing headlines and stories feels a little like using a mini-smartphone.

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An optical heart-rate monitor on the back works like the ones on previous Samsung Gear watches this year.

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The Gear S is also IP67 water and dust resistant, but not fully waterproof.

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The pre-set watchfaces have shortcut buttons for notifications and weather, but vary in aesthetics.

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The Gear S is comfortable, and even feels a bit sporty. But, again, it's awfully big.

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The Gear S has its own 3G connectivity and SIM card slot for making phone calls and getting messages.

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Another look at the battery charger, which charges via micro-USB.

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The Gear S also has 802.11 b/g/n Wi-Fi and GPS.

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A light lets you know when the battery pack's fully charged your watch.

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You'll need a Samsung phone running Android 4.3 to use the Gear S.

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You'll also need a phone to install apps onto the Gear S, despite the watch having its own Wi-Fi and 3G.

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A Nike+ Running App turns the Gear S into a Fuel-earning fitness gadget, a first for Samsung Gear wearables.

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Apps are stored on the Gear S's 4GB of memory. You can also store music tracks to play via Bluetooth headphones.

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Will this be the shape of future Gear watches?

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As for data plan pricing and carrier compatibility, stay tuned. But 3G on a watch will be a tall order to ask anyone to pay for unless it works really, really well.

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