The NanoWatch runs embedded Linux, and features a 1.54 inch Touch screen display, 256 Mb ROM, a 4 GB internal microSD card, and a SIM card slot. It can be used as a stand alone cellphone or link to an Android phone in your pocket via Bluetooth.
The device can be worn as a watch, but you could also hang it on your neck, or clip it on your shirt. You can make/answer phone calls, or pair it to your Android smartphone to sync emails and contacts, and make / received phone calls.
The product is available now, and should sell for $99 retail. You can find more information on WiMe NanoWatch page
By comparison the Pebble E-Paper Watch can communicate with Android and iOS apps using Bluetooth, but doesn’t have its own SIM card and can’t make or receive phone calls independently. It will communicate with an Android or iOS device using Bluetooth 2.1 but includes support for Bluetooth 4.0 (Bluetooth Low Energy) for a later update.
The Sony Ericsson LiveView ($125), is a wearable device that connects to a variety of Android phones and can display Twitter feeds, RSS feeds, SMS, and control the phone media player, among other things.
You can connect your smartphone to your SmartWatch and then access all your music on your phone. Play, skip, fast forward. Use Bluetooth to connect to your headphones.
You can’t place calls, though. You need a SIM card for that.
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