With Captive nuts for solid bar retention Kickback brake and Variable speed trigger switch provide high operability Main power switch with auto power-off function for battery saving and avoiding unintentional start up Vibration Level : Cutting Wood: 5.3 m/s? Sound Pressure Level : 87.7 dB(A) Sound Power Level : 100.4 dB(A) Chain oil tank : 200 mL Cutting Length : 370 mm (14-1/2") Chain speed per minute : 0 - 20 m/s (0 - 1,200 m/min) (0 - 3,940 FPM) Chain Pitch : 3/8" Chain Gauge : 1.1 / 1.3 mm (0.043" / 0.050")