.Sound power level- 110 dB(A).Sound pressure level-100 dB(A).Vibration level Front handle-4.9 m/s².Vibration level Rear handle-5.0 m/s².Easy start, On-off choke combination switch and Primer pump for providing higher maneuverability Compact and ligh tweight body for better handling.Touch & Stop Switch automatically.returns switch to start position, eliminating carburetor flooding.Intelligent Ignition Coil controls stable idling, increases output power, protects against engine overrun and enables easier restarting.External access holes allow easy carburetor adjustment.Adjustable automatic chain lubrication with large oil reservoir Inertia Chain Brake.Metal spike bumper firmly grips workpiece to provide more control, making cutting easier.