A journalist checks out a curved G Flex smartphone by LG Electronics at the show in Las Vegas. Photo: Reuters/Steve Marcus

Gadgets to help a user exercise better, cook better and even brush their teeth better are among the products unveiled at the world’s largest electronics show.

More than 3,000 exhibitors from all over the world showed off their latest innovations and vied for attention from 152,000 industry attendees at the Consumer Electronics Show in Las Vegas, Nevada.

South Korean technology giant LG Electronics used its pre-show press conference to unveil a fitness wristband to monitor the user’s heartbeat, calorie consumption and movement, as well as incoming phone calls and music controls.

The Lifeband Touch measures performance via fitness apps and touch-enabled screen and can be teamed with earphones featuring sensor technology to measure blood-flow signals from the inner part of the ear to measure heart rate and oxygen consumption.

Tim Alessi, director of new product development for home entertainment at LG, told the packed press conference: “Sensors in the earphones track heart rate while you’re listening to music and can provide audible updates on your heart rate and the progress of your workout.

“When used in conjunction with the Lifeband Touch, it will also display heart rate information on the OLED display.”

The company also showed off its new messaging service, Home Chat, which allows the user to tell their appliances what they need them to do with a single text message, be it switching off the oven or checking what is in the fridge at home while in the supermarket.

Kolibree gave journalists an early look at its smart toothbrush, which analyses brushing habits

Also on display were a curved screen mobile phone and OLED television and a smart TV running the webOS operating system, making it easier for users to operate the television.

French company Kolibree gave journalists an early look at its smart toothbrush, which analyses brushing habits.

Billed as the world’s first connected toothbrush, users can download a free app to connect to the brush via Bluetooth. Data from the brush is then automatically synced to the smartphone to tell whether they brushed for long enough and succeeded in cleaning the hard to reach parts of the teeth and gums.

Fellow French company Parrot grabbed attention with a miniature flying drone and a jumping robot that can be controlled with a smartphone or tablet.

The Jumping Sumo can spin and turn 90 degrees and jump up to three feet from the floor onto a table. It also boasts a built-in camera to watch its movements on the tablet or phone.

The MiniDrone features large wheels that allow it to roll on the floor while the rotors let it drive up walls and along the ceiling.

Transformers director Michael Bay proved he needs a script just as much as his action hero movie stars when he suffered an autocue malfunction during a presentation of Samsung televisions.

The Hollywood producer stumbled over his lines before walking off stage while unveiling the South Korean brand’s new 105-inch curved TVs.

Before the incident, Bay told the press conference: “My job as a director means I get to dream for a living. I create visual worlds that are so beyond everyone’s life experiences. Hollywood is a place that creates viewer escape.”

After several long pauses, he then revealed the autocue was out of sync, adding: “I will just wing this.” He briefly attempted to talk about the televisions without the aid of the prompter but seconds later apologised and walked off stage.

Joe Stinziano, senior vice-president of Samsung Electronics, continued the presentation saying: “Welcome to Vegas, it’s a live show folks.”

Introducing the television, Mr Stinziano said: “At 105 inches, this is the world’s largest UHD TV, it features the most advanced technology and design, a massive movie theatre screen, of course UHD and a curve for a truly cinematic experience.

Billed as the world’s first connected toothbrush, users can download a free app to connect to the brush via Bluetooth. Photo: PA. Right: A Sony lens-style digital camera is displayed at the 2014 Consumer Electronics Show. Photo: Reuters/Steve Marcus

“This represents our unremitted efforts to reshape TV, driven by our consumer’s passion for entertainment. The curved shaped improves the already amazing Samsung UHD viewing experience, the wider field of view and panoramic effect draws viewers in, the TV seems even bigger than it is.”

The demonstration of the television bending at the simple touch of a button was among the highlights of the hour-long press conference, when the brand also unveiled a series of new multi-window tablets.

The Samsung Galaxy NotePRO and TabPRO feature Multi Window, allowing users to split the screen into four windows, running applications in each of them.

The NotePro also features an S Pen to draw a window on the screen and access in-application features.

The tablets also allow users to access and control their home or office PCs to edit and save file remotely.

The technology giant also un-veiled smart ovens , fridges and washing machines, as well as new cameras.