What's new The Dexcom G7 is known as a CGM, or constant glucose monitor. It sends readings every five minutes from a tiny sensor under your skin to your smartphone or a receiver via Bluetooth.

This is a Class I recall where 56 serious injuries have been reported. If you use one of Dexcom's continuous glucose monitoring systems, here's what you need to know.

On Wednesday, medical device manufacturer Dexcom finally delivered its direct-to-Apple Watch functionality for the G7 CGM. Here's how it works.