Features and Benefits:OUTPOWER: Makita-built brushless motor delivers 4,000 RPM for up to 2X faster cutting than corded;OUTSMART: The digital communication within XGT® optimizes performance to provide up to 2X longer sustained power under heavy-load applications;OUTLAST: XPT™ is engineered to provide increased dust and water resistance in harsh jobsite conditions;Extra Large 3-3/4" cutting capacity at 90°;cuts 4X material in a single pass;Up to 150 cuts per charge in 4x4 SPF lumber on a single charge of a 4.0Ah battery (battery not included);Bevel angle up to 56º, with positive stops at 22.5º and 45º;Ergonomic design weighs only 13.3 lbs.;up to 3.2 lbs. lighter than corded;Automatic Torque drive adjusts cutting speed under load for optimum cutting performance;Electric brake for maximum productivity;Auto-start wireless System (AWS®) utilizes Bluetooth technology for wireless on-off communication between the tool and dust extractor;AWS® capable with Auto-start Wireless Transmitter (part no. 198901-5) sold separately;Die-cast magnesium base, blade guard, and blade cover for a lighter weight durable design;Onboard offset wrench for faster blade changes;Retractable, extra-wide tool hook secures the tool when not in use;The digital communication within XGT® actively monitors and protects against overload, over-discharge and overheating;XGT® Tools and Batteries are designed with a multi-layer contact interface for more constant power delivery to take on high-current demands;XGT® Batteries feature rigid rails with impact-resistant construction to secure the battery to the tool during high-demand applications (battery not included);The XGT® Rapid Charger with dual-fan design circulates air through the battery to cool the battery and circuit board quickly for faster charging (charger not included);The XGT® Rapid Charger’s digital display indicates battery charge level (-80%, +80%, 100%);The XGT® Rapid Charger’s built-in chip thoroughly communicates during the charging process to control current, voltage, and temperature for more efficient charging;The 40V max XGT® Brushless Rear Handle 10-1/4” Circular Saw (GSR02Z) provides cordless convenience, while taking on high-demand applications. The Makita-built brushless motor delivers 4,000 RPM for faster cutting than corded. It cuts 4X the material in a single pass with an extra large cutting capacity of 3-3/4”. This saw is ideal for framers, builders, roofers, forming, and more.The GSR02Z offers 56-degrees bevel capacity with positive stops at 22.5-degrees and 45-degrees and a bevel up to 56-degrees. The saw features an electric brake for maximum productivity and a die-cast magnesium base.Automatic Torque Drive Technology adjusts cutting speed under load for optimum cutting performance. The saw is also equipped with Makita's Extreme Protection Technology (XPT™), is a series of integrated seals designed to improve a tool’s operation in harsh conditions by channeling water and dust from key internal components.XGT is a system of equipment, tools, batteries, and chargers utilizing 40v max lithium-ion batteries. XGT is engineered to deliver high power to take on high-demand applications, allowing users to completely transition to a cordless job site. XGT is equipped with advanced brushless motor engineering, intelligent digital communication, and superior durability features to outpower, outsmart and outlast the competition.