On Tuesday, Misfit announced Flash, its second wearable product. It’s a disk-shaped activity tracker that is covered in soft plastic. It will retail for under $50 when it goes on sale in October. The Flash is a sequel to Misfit’s first wearable activity tracker, Shine. The primary difference is that the Shine is $99.99 and is made out of machined aluminum, while the less expensive Flash is made of plastic. Like the Shine, the Flash will be able to track steps, sleep and other forms of activity and sync it with the Misfit app. Flash won’t require nightly charging, because it lacks a screen, so it can draw power for months from a watch battery. Instead of a screen, Flash will work like one big button: Tap the front and embedded LEDs will light up, allowing you to check progress toward your daily activity goal.