Specifications:  Style(Option): Blue / Red Black / Black Gray / Chain+Guide Plate;  Power: 3000W;  Chain Speed: 6M/S;  Chain: Quick adjustment;  Applicable Battery: For Makita 18-21V Battery (not included);  Battery recommendation: Mensela 18V Battery;  Full Chain Length: About 23cm / 9';  Guide Plate Length: About 18.5cm / 7';  Applicable Length After Installation: About 6';  Host Size(L * H): About 10cm * 30.5cm / 4' * 12'.     Features:  - Wireless binding: easy outdoor cutting.  - Strong motor: 3000W, powerful power,long service life.  - Handle design: comfortable grip, in line with human body design.  - Easy to use: no need to disassemble, turn the screw to adjust the chain tightness.  - Safety double switch: press and hold the double switch to start, press and use, release and stop.  - High quality guide chain: sharp wear-resistant, deep quenching more wear-resistant, cutting smooth.  - Step less speed change switch: humanized switch design, adjust cutting speed according to pressure.  - Efficient heat dissipation: the design of multiple exhaust outlets on the fuselage can effectively prevent burning.  - Lightweight fuselage: light and portable, one handed operation,comfortable to hold, not tired to hold for a long time.  - Safety protection baffle: comprehensive protection, rest assured cutting to prevent spark sawdust and other spatter.  - Four intelligent protection functions: over-current protection, over-voltage protection, overheating protection, charging and discharging protection.     Package Includes:  1 * Host (Not include the battery);  1 * Chain;  1 * Baffle;  1 * Screw;  1 * Guide Plate.     Chain Installation Instructions:  Step 1:  Install the guide plate and chain into the sprocket, and install the guide plate adjusting elastic pin into the small hole of the guide plate.  Step 2:  Cover the guide plate cover, nut and keep it not tightened, adjust the tightness of the chain by hand.  Step 3:  Tighten the screws with a wrench.     Note:  1.If you have any problems or concerns, please contact us, we are always there.  2.Please allow 1-3cm measuring deviation due to manual measurement. Thanks for your understanding.  3.Monitors are not calibrated same, product colour displayed in photos may be showing slightly different from the real object. Please take the real as standard.  4.Guide plate styles are shipped randomly.  5.Product does not contain batteries.