The CITA Wireless conference took place in La Vegas last week and along with the world's biggest tech manufacturers, the event also attracted some of the smaller, lesser-known vendors.

Sometimes it's the smaller companies that offer the most interesting products, even if they never gain popularity with mainstream consumers.

For example, the big attraction from Kempler & Strauss's was the W PhoneWatch, a wearable GSM phone and wristwatch that is sold unlocked for $199 (£130) and includes a SIM card to be activated with service from a number of providers.

The W PhoneWatch includes a touchscreen interface, still and video cameras, an MP3 player and productivity applications that can be backed up on a 2GB micro SD card.

It includes Bluetooth connectivity for use with in-car and in-ear devices.

Kristin Proctor, a spokeswoman for Kempler & Strauss demonstrated the ability to type and send a text message, although the device has no web connectivity. LG also offers a wristwatch phone.

The W PhoneWatch became available in the US in February, and sales have hit 4,000 via the Kempler & Strauss website; the company considers that figure to be encouraging.

Kempler & Strauss was expecting to show off a Billionaire-7 smartphone, which is based on Windows Phone 7 Series, but the prototype was not ready to demonstrate, Proctor said.

She described it as having a touchscreen and full physical keyboard.

Elsewhere, Connectify showed off software that's designed to turn a Windows 7 laptop into a Wi-Fi hotspot, which a user's friends or co-workers in the vicinity can use to connect to the internet.

Connectify CEO Alexander Gizis said in an interview that he is considering offering a $10 (£6.55) enterprise version of the software, which has already been downloaded by 300,000 users.

"Why buy a separate Wi-Fi router when you can turn your laptop into one?" Gizis asked.

Gizis joined several other entrepreneurs, mostly from smaller companies, who demonstrated their wares at the Wireless Innovators Dinner, which was timed in conjunction with CTIA but is sponsored by MobileTrax, an industry research firm headed by well-known analyst Gerry Purdy.

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