Features:

• Case and color may vary based on manufacturer's choosing. All units (including units with Discovery cases) include Scheduler technology.
• Robotic, battery-powered floor vacuum and remote scheduling device
• Remote scheduler sets and changes vacuuming times and zones
• On-board artificial intelligence navigate between walls and furniture legs and self-adjusts for carpet, tile, and wood floors.
• Remanufactured to "like-new" condition; may contain minor cosmetic blemishes. 90 day manufacturer's warranty.

Rating : - Roomba Magic!
I've had my remanufactured roomba scheduler from Amazon for about 2 months now. I LOVE it!
It has saved me a lot of time and made me feel like my home is SOOO much cleaner. Before the roomba, I would only vacuum once every week or so. Now I let the roomba go at it every other day in the living room. You would not believe all the dog hair it picks up EVERY time it runs!
You do have to spend some time cleaning off the brush bars, etc., underneath, every few times you run it. But it's not much effort and worth all the other time it saves me.
I don't use the scheduling feature at all, so I can't comment about that.