Both are coming in April, and both will be available with up to an Intel Core i7 Kaby Lake processor up, to a 3,840 x 2,160 pixel display, up to 16GB of RAM and up to 1TB of PCIe solid state storage.
One key difference? The lager model also supports optional NVIDIA GeForce GTX 1050M graphics.
The laptops feature 360 degree hinges that allow you to fold back the screen and hide it away when you want to hold the computer like a tablet. And thanks to slimmer bezels around the screen, the new Lenovo Yoga 720 convertibles are a bit more compact than earlier members of the Yoga 700 series family.
The Yoga 720 13″ features two Thunderbolt 3/USB Type-C ports, a USB 3.1 port, USB 3.0 port, Display Port, and headset jack and fingerprint reader. The laptop measures about 0.5 inches thick and weighs about 2.9 pounds.
Lenovo says you should be able to get up to 8 hours of battery life on a 13.3 inch model with a 1920 x 1080 pixel display or up to 7 hours of battery life on a 4K/Ultra HD model.
The Yoga 720 15.6″ has a similar port arrangement, but the fingerprint reader is optional, and the notebook measures 0.75 inches thick and weighs about 4.4 pounds.
Thanks to a bigger battery in this model, Lenovo says a 15.6 inch mdoel with a full HD screen should get up to 9 hours of battery life, while a 4K model should run for up to 8 hours on a charge.
Both models are also able to work with an optional Lenovo Active Pen for pressure-sensitive input while writing or drawing.