Showgoers eyed a stage at the Las Vegas Convention Center ahead of the Nvidia keynote address at CES on Jan. 4, 2017. Reuters

Tech companies flocked to the Las Vegas Convention Center as the 50th Consumer Electronics Show—a quaint descriptor in the era of self-driving cars, big data and cloud-based storage systems, as the New York Times pointed out—kicked off Thursday morning.

Tickets to the four-day event’s dozens of conferences on everything from 3D printing to “digital Hollywood” range from several hundred dollars to a $1,700 deluxe pass. However, techies across the globe unable to foot the bill, let alone make it to Sin City for the couple dozen free conferences, can tune in to the CES 2017 live stream for free.

Although many see CES as a “schmoozefest” and a giant publicity stunt for the likes of Microsoft, Apple, Samsung and Google, the conference offers plenty of reasons for the world’s tech-obsessed to take a look.

Versions of Amazon’s popular artificial intelligence-equipped speaker and home helper, the Echo, are likely to be ubiquitous. BBC’s preview of the event pointed to a demo by the French startup Bixi that allows tablet and smartphone users to control their devices from a short distance by making hand gestures. As tech publication the Verge noted, the voice command service Amazon uses for its Echo product were also practically universal, with Sony, LG, General Electric, Lenovo, Bixi and Mattel implanting the artificially-intelligent helper into their products.

In addition to the horde of various new Alexas, CES 2017 will feature a slew of home help robots intended to act as caretakers for the elderly, according to ABC News. Elder care communication system Yumii’s robot companion, named Cutii, serves as a daily assistant to aging people, while healthcare company NeuroMetrix’s leg or arm band Quell is meant to relieve chronic body aches by emitting “neural pulses.”

Another trend to look out for: big, crystal-clear TVs. Screens with 4,000 pixels, also called 4k resolution, are expected to dominate, as tech reporter David Katzmaier wrote in CNET. Also among the high-tech TVs will be those with organic light-emitting diode (OLED) screens, known for their curved edges and high-quality image.

To watch a free live stream of the annual conference, click here.