BiWee smart phone controlled fighting robots are shown during an unveiled press preview event for the 2014 International Consumer Electronics Show (CES) at the Mandalay Bay Convention Center in Las Vegas, Nevada, USA, 06 January 2014. The company touts the unit as the world's first curved flexible smart phone featuring a six-inch (15 cm) curved P-OLED screen. CES, the world's largest annual consumer technology trade show runs from 07 to 10 January 2014 and is expected to feature 3,200 exhibitors showing off their latest products and services to about 150,000 attendees. (Photo by Michael Nelson/EPA)

Matt Brown demonstrates US company ZEPP multi-sensor sports systems during the unveiled press preview event for the 2014 International Consumer Electronics Show (CES) at the Mandalay Bay Convention Center in Las Vegas, Nevada, USA, 06 January 2014. (Photo by Michael Nelson/EPA)

Journalists watch presentation of LG G Flex phone during the first press event “CES Unveiled” at the Mandalay Bay Convention Center prior to the 2014 International CES in Las Vegas, Nevada on January 05, 2014. (Photo by Joe Klamar/AFP Photo)

The Sapphire Wellness Watch is shown during the unveiled press preview event for the 2014 International Consumer Electronics Show (CES) at the Mandalay Bay Convention Center in Las Vegas, Nevada, USA, 06 January 2014. (Photo by Michael Nelson/EPA)

The Kolibree toothbrush, the world's first Internet-connected toothbrush, is displayed “CES: Unveiled”, the media preview for International CES, at the Mandalay Bay Convention Center January 5, 2014 in Las Vegas, Nevada. The Kolibree toothbrush includes a sensor which detects how much tartar is being removed in a brushing. It also records brushing activity so users can maintain a consistent cleaning each time. The device conveys the information wirelessly to a smartphone app. (Photo by Robyn Beck/AFP Photo)

The D100 British made smart phone from Caterpillar is shown during the unveiled press preview event for the 2014 International Consumer Electronics Show (CES) at the Mandalay Bay Convention Center in Las Vegas, Nevada, USA, 06 January 2014. (Photo by Michael Nelson/EPA)

Mother data monitoring system from France is shown during the first press event “CES Unveiled” at the Mandalay Bay Convention Center prior to the 2014 International CES in Las Vegas, Nevada on January 05, 2014. (Photo by Joe Klamar/AFP Photo)

Thew OK-I-Dokeys smart lock controlled by a smart phone is shown during the Unveiled press preview event for the 2014 International Consumer Electronics Show (CES) at the Mandalay Bay Convention Center in Las Vegas, Nevada, USA, 06 January 2014. (Photo by Michael Nelson/EPA)

The AcceleDent Orthodontic treatment device is shown during the Unveiled press preview event for the 2014 International Consumer Electronics Show (CES) at the Mandalay Bay Convention Center in Las Vegas, Nevada, USA, 06 January 2014. (Photo by Michael Nelson/EPA)

A DJI Innovations DJI Phantom 2 Vision aerial system drone is shown during “CES: Unveiled”, the media preview for International CES, at the Mandalay Bay Convention Center January 5, 2014 in Las Vegas, Nevada. The Phantom 2 Vision, available for USD 1,199, has a 14-megapixel camera on board that can shoot raw photos and 1080p video. The video can be seen live and stored on an iPhone or Android smart phone attached to the controller. (Photo by Robyn Beck/AFP Photo)

Liquid Image's googles with built in cameras on display during the first press event “CES Unveiled” at the Mandalay Bay Convention Center prior to the 2014 International CES in Las Vegas, Nevada on January 05, 2014. (Photo by Joe Klamar/AFP Photo)

Cassidy Lammers (R) demonstrates the Lenovo Horizon Two touch screen computer during the Unveiled press preview event for the 2014 International Consumer Electronics Show (CES) at the Mandalay Bay Convention Center in Las Vegas, Nevada, USA, 06 January 2014. (Photo by Michael Nelson/EPA)

Reebok's Checklight impact indicator displayed at the first press event “CES Unveiled” at the Mandalay Bay Convention Center prior to the 2014 International CES in Las Vegas, Nevada on January 05, 2014. (Photo by Joe Klamar/AFP Photo)

The Tinké connected health monitor by Zensorium is displayed beside an Android smartphone to which it can link via Bluetooth at “CES: Unveiled”, the media preview for International CES, at the Mandalay Bay Convention Center January 5, 2014 in Las Vegas, Nevada. Tinké, an optical sensory device for smartphones monitors measures heart rate, respiratory rate, blood oxygen levels, as well as heart rate variability with a touch of the finger. (Photo by Robyn Beck/AFP Photo)

The DJI S1000, an eight-bladed, aerial photography system by DJI Innovations, is displayed during “CES Unveiled”, a media preview event to the annual Consumer Electronics Show (CES), in Las Vegas, Nevada, January 5, 2014. (Photo by Steve Marcus/Reuters)

Smartphone cases with solar photovoltaic cells by EnerPlex are displayed during “CES Unveiled”, a media preview event to the annual Consumer Electronics Show (CES), in Las Vegas, Nevada, January 5, 2014. The cases retail for $89.99-$99.99 depending on the model. (Photo by Steve Marcus/Reuters)

A Schwinn CycleNav is displayed on a bicycle during “CES Unveiled”, a media preview event to the annual Consumer Electronics Show (CES), in Las Vegas, Nevada, January 5, 2014. The CycleNav links with a smartphone and gives visible and audio directions to the rider. (Photo by Steve Marcus/Reuters)

A Prong iPhone case is displayed during “CES Unveiled”, a media preview event to the annual Consumer Electronics Show (CES), in Las Vegas, Nevada, January 5, 2014. The case has a fold-out plug that allows the phone to plug directly into the outlet. The cases retail for $59.95- $69.95 depending on the model. (Photo by Steve Marcus/Reuters)

A woman takes a photo of a Sphero 2.0 by Orbotix during “CES Unveiled”, a media preview event to the annual Consumer Electronics Show (CES), in Las Vegas, Nevada, January 5, 2014. The Sphero 2.0 and 2B (foreground) are controlled with a smartphone. The Sphero 2.0 is already available. The 2B expected to ship in the fall of 2014, a representative said. (Photo by Steve Marcus/Reuters)

BeeWi BBH300 headphones are displayed during “CES Unveiled”, a media preview event to the annual Consumer Electronics Show (CES), in Las Vegas, Nevada, January 5, 2014. The headphones steam music from a smartphone or MP3 player but can also forward the music to a stereo when attached to a docking station. The $300 headphones are expected to ship in a few weeks, a representative said. (Photo by Steve Marcus/Reuters)

A Tao WellShell is displayed during “CES Unveiled”, a media preview event to the annual Consumer Electronics Show (CES), in Las Vegas, Nevada, January 5, 2014. The WellShell is an electronic isometric device but also monitors various fitness levels and transmits the data to a smartphone. (Photoby Steve Marcus/Reuters)

A Zepp sensor is shown on a golf glove during “CES Unveiled”, a media preview event to the annual Consumer Electronics Show (CES), in Las Vegas, Nevada, January 5, 2014. The sensors, available for golf, baseball and tennis, analyze 1,000 data points per second to create 3D representations of a player's swing, a representative said. The sensors retail for $149.99, he said. (Photoby Steve Marcus/Reuters)

A Liquid Image wearable camera is paired with a 4G LTE module (R) during “CES Unveiled”, a media preview event to the annual Consumer Electronics Show (CES), in Las Vegas, Nevada, January 5, 2014. The camera and module combination make it the first wearable camera that can stream over LTE, a representative said. (Photoby Steve Marcus/Reuters)

The LG G Flex phone is shown during the Unveiled press preview event for the 2014 International Consumer Electronics Show (CES) at the Mandalay Bay Convention Center in Las Vegas, Nevada, USA, 05 January 2014. The company touts the unit as the world's first curved flexible smart phone featuring a six-inch (15 cm) curved P-OLED screen. (Photo by Michael Nelson/EPA)

Casey Macioge representing AcousticSheep LLC wears a RunPhones headband, a moisture wicking headband with removable headphones at the “CES: Unveiled”, media preview for International CES, at the Mandalay Bay Convention Center in Las Vegas on January 5, 2014. (Photo by Robyn Beck/AFP Photo)

Robert Price of TREWGrip LLC demonstrates a TREWGrip handheld rear-type keyboard and air mouse for Apple and Android tablets at the “CES: Unveiled”, media preview for International CES, at the Mandalay Bay Convention Center in Las Vegas on January 5, 2014. (Photo by Robyn Beck/AFP Photo)

Robert Price of TREWGrip LLC demonstrates a TREWGrip handheld rear-type keyboard and air mouse for Apple and Android tablets at the “CES: Unveiled”, media preview for International CES, at the Mandalay Bay Convention Center in Las Vegas on January 5, 2014. (Photo by Robyn Beck/AFP Photo)