The Oregon CS1500 corded electric chainsaw features a chain that can sharpen itself. The 15 Amp high-powered motor offers fast cutting with an 18 in. (45 cm) reduced-kickback guide bar and chain. A tool-less chain tensioning system along with the PowerSharp chain sharpening system allow you to get more work done in less time. -Instant start with the pull of a trigger, minimal maintenance, low noise and silent between cuts -With a simple pull of the red powersharp lever, you will take your chain from dull to sharp in as little as 3-seconds so you will never cut with a dull chain again -Ergonomic design to remain lightweight (12.6 lbs.) and balanced, low vibration, over-mold comfortable handle -Integrated chain brake for safety -Strain relief bracket prevents unintended power disconnections -Front hand guard protects operator from flying debris -Trigger lock-out prevents accidental start-ups -Oil level window allows sight check of bar oil level