The device itself is a coaster-sized, Bluetooth-enabled button. When you need to buckle down, just give the button a pop and launch a focused work session for a set amount of time (because breaks SHOULD happen sometime), during which you won't be able to distract yourself with certain unproductive websites.
What sets this apart from other productivity tools is its specialized app, which tracks your activities, provides rewards, and lets you compete with coworkers and friends. Just what you need to get you to work—ruthless competition. The app is available without the button, but it'll cost you extra.