In terms of functions, it's more of a complement to your existing smart setup than a standalone do-it-all device. It can stream what's on your phone or tablet to the big screen.
Or if you're already streaming something to your phone, you can mirror what's on screen to your TV.
To use of it, you'll need to plug the Cast into your TV's HDMI port and into a micro-USB connection for power.
It supports dual frequency Wi-Fi, so both the 2.4GHz and 5GHz frequencies, which is one more than the Google Chromecast. Lenovo's model also has greater range – up to 20m - and even streams through walls.
And it supports more connection standards too. As well as Google Cast, it plays nice with DLNA and Miracast.
You'll have to pay a bit more for these extra features, however. Lenovo's effort will cost $49 (£32) when it goes on sale in August. Based on the US price, that's $14 more than the Google Chromecast.
Amazon's Fire TV Stick briefly enjoyed a reduced price of £25, but now it's back up to its standard RRP of £35.