Instruction: Using the product's title, description, features, price, and brand, identify and retrieve the values associated with a specified set of target attributes. Output the extracted values along with their respective sources (e.g., title or feature) indicating where each value was found.

Input:
Product title: RoboMow RL850 Robotic Cordless Electric Lawn Mower, 21-Inch
Product description: Imagine relaxing on your porch with your family instead of mowing the lawn. With the innovative Friendly Robotics Robomow RL850, you can turn your dreams into a wallet-friendly reality. This fully automatic lawnmower cuts grass all by itself, so you can get a vacation from mowing--forever! Just drive the Robomow to the edge of your yard and press 'Go' for a beautifully manicured lawn., Robomow RL850 At a Glance: Automatic lawnmower mows entirely by itself Cuts up to 10,800 square feet in a single charge On-board sensor and bumpers to avoid obstacles Grasscycles for a healthier, greener lawn that requires less water Quiet operation means you can mow day or night Robomow does all the work so you don't have to. Operates without gas, oil, or spark plugs. Automatic Lawnmower Does All the Work for You The Robomow RL850 is an innovative lawn mower that works automatically, so you won't have to spend another weekend pushing your old gas guzzler around the yard. It mows on its own within a boundary that you outline with a thin wire (included). Once you handle the initial wire setup, this mower does all the work for you--simply press 'Go', sit back, relax, and mow!, Powered by exclusive drop-and-go 24-volt batteries, the heavy-duty Robomow RL850 is a 53-centimeter, 21-inch mower/mulching system. With its three blades spinning at 5,800 RPM--double the speed of a typical gas mower--the Robomow RL850 travels across your lawn in a crisscross pattern, covering up to 10,800 square feet on a single charge. Easy to set, the Robomow RL850 delivers a 1.75- to 3.25-inch cut with high-cut blades and a 1.0-2.5-inch cut with low-cut blades., Wallet-Friendly Choice Unlike conventional lawn mowers that pollute as much as 40 late-model cars in just one hour of use, Robomow RL850 offers a way to keep your lawn looking great without sacrificing the environment., The Robomow RL850 doesn't simply cut your grass--it repurposes the clippings through a patented process called grasscycling. The mower cuts grass into fine clippings and disperses the cuttings over the ground. These clippings quickly decompose and release valuable nutrients and water into the soil, resulting in a better-looking lawn. Grasscycling also leads to a deeper, healthier root system that increases your lawn's resistance to disease, drought, and insects, and it reduces the amount of water your lawn needs by as much as 85%., And because the Robomow RL850 doesn't require gas, oil, tune-ups, or spark plugs, it will save you money., Multiple Features for Safe, Quiet Operation In addition to its environmental benefits, the Robomow RL850 offers several user-friendly, neighbor-friendly features. First, a user-controlled theft protection system guards the mower from unauthorized use, and a child lock provides peace of mind., An on-board sensor and bumpers identify obstructions like trees, rocks and obstacles, and truly quiet operation means you can mow your lawn at any hour without disturbing your neighbors., Dimensions and Warranty Information The Robomow RL850 is WEEE and RoHS compliant, measures 26.0 x 12.5 x 35.0 (WxHxD), weighs 50 pounds (without battery), and is backed by a two-year warranty., What's in the Box Robomow RL850; 500-foot perimeter wire and 200 plastic pegs; sealed batteries and charge pack; 2007 Generation software; instruction manual.
Product feature: Robotic lawnmower designed to mow entirely by itself, Efficiently and safely mows lawn, while you relax, Cuts up to 10,800 square feet on a single 24-hour charge, Onboard sensor and bumper avoids obstacles; built-in child safety lock; powerful mulcher, This item is not for sale in Catalina Island
Product brand: Robomow
Target attributes: Power Source
Answer: attribute: power source
value: electric lawn mower
source: product title