1) chaoyue premium 2-cycle engine 2) High-torque engine 3) 1-piece electronic ignition 4) Externally-adjustable, boot-mounted 5) Oregon? or Carlton? saw chain. They all meet the ANSI low-kickback requirement. 6) 4-bolt muffler 7) Fully adjustable, automatic chain oiling pump 8) Aluminum alloy front handle bar 9) Chain brake 10) Chain catcher 11) Hand guard 12) 3-shoe centrifugal clutch 13) 7-point anti-vibration system 14) Rim-type sprocket 15) 2-ring piston design 16) High-impact glass filled nylon rear handle and recoiled housing 17) Easy access air filter 18) Chrome-plated cylinder 19) Magnesium alloy case 20) Carburetor brand: Madein China 21) Saw chains brand: Oregon? / Carlton?/made in chian 22) Air injection: yes 23) Low vibration: yes 24) Easy off filter cover: yes 25) Adjustable oil filter: yes Outer packing: colored carton Carton dimensions (L x W x H): 465 x 300 x 290mm G.W.: 8.0kg