Features:  - Can be used for sawing branches, sawing metal, sawing PVC, sawing wood, etc.  - Self-locking chuck, press and hold the chuck to insert the saw blades, only 2S for installation and replacement.  - Powered by LI-ION rechargeable battery, provide longer running time and more power.  - Keyless Self-locking blade clamp allows for quick and easy blade changes.  - Ergonomic comfortable grip handle, provides balance and tool control.  - The body is waterproof, can be adapted to the needs of underwater work (Note: the battery is not waterproof).  - Pivoting shoe provides constant contact with the work-piece resulting in smoother cuts with less bucking and vibration.  - Stepless speed change, speed increases as the strength of the switch increases.     Specifications:  Battery: 88V;  Voltage: 21V;  Power: 350W;  Frequency: 50HZ;  Power source: Lithium-Ion Battery;  No-Load Speed: 0-1800RPM/MIN;  Speed control mode: Stepless speed change;  Scope of application: Sawing wood metal plastic, etc.;  Type:  A: 1 x Blue Electric Saw + 2 x Battery;  B: 1 x Blue Electric Saw + 1 x Battery;  C: 1 x Red Electric Saw + 2 x Battery;  D: 1 x Red Electric Saw + 1 x Battery.     Package Included:  1 x Electric Saw;  1 x Battery;  4 x Wood Cutting Blade;  OR  1 x Electric Saw;  2 x Battery;  4 x Wood Cutting Blade.