![GARDENA 15001-20 SILENO City - Automatic Robotic Lawn Mower, with Bluetooth app and Boundary Wire, The quietest in its Class, for lawns up to 2700 Sq Ft, Made in Europe, Grey GARDENA 15001-20 SILENO City - Automatic Robotic Lawn Mower, with Bluetooth app and Boundary Wire, The quietest in its Class, for lawns up to 2700 Sq Ft, Made in Europe, Grey](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/A1jjbCWlIpL.jpg)
GARDENA 15001-20 SILENO City - Automatic Robotic Lawn Mower, with Bluetooth app and Boundary Wire, The quietest in its Class, for lawns up to 2700 Sq Ft, Made in Europe, Grey
How hard would it be to make an effective manual lawn mower (no fuel, no electricity, can cut grass of any length)? What about four wheels instead of two, and horizontal blades
![Sun Joe 24-Volt Ion+ Cordless Walk Behind Push Lawn Mower W/ 5.0-Ah Battery and Charger Assembled Product Weight 28.6lb - Walmart.com Sun Joe 24-Volt Ion+ Cordless Walk Behind Push Lawn Mower W/ 5.0-Ah Battery and Charger Assembled Product Weight 28.6lb - Walmart.com](https://i5.walmartimages.com/asr/20305f20-6bde-461e-8f66-ffebdfb8b187.8d00febd3c03bce2fbde1edf09c77652.jpeg?odnHeight=612&odnWidth=612&odnBg=FFFFFF)
Sun Joe 24-Volt Ion+ Cordless Walk Behind Push Lawn Mower W/ 5.0-Ah Battery and Charger Assembled Product Weight 28.6lb - Walmart.com
![Amazon.com: WORX Landroid M 20V Power Share Robotic Lawn Mower 1/4 Acre / 10,890 Sq.Ft Power Share- WR140(Battery & Charger Included) : Everything Else Amazon.com: WORX Landroid M 20V Power Share Robotic Lawn Mower 1/4 Acre / 10,890 Sq.Ft Power Share- WR140(Battery & Charger Included) : Everything Else](https://m.media-amazon.com/images/W/IMAGERENDERING_521856-T1/images/I/513WtpRGFnL.jpg)