POWER: The Bosch GWS18V-45PCN is a powerful cordless, connected-ready angle grinder that provides professional 4-1/2 In. grinder operation, next-gen user control and advanced electronics. INCREASED RUNTIME: Featuring an EC Brushless motor, the impact driver delivers greater runtime, has capacity to transfer up to 35% more power and up to 110% more runtime with an optional CORE18V battery (sold separately). BLUETOOTH CAPABLE: The Bosch GWS18V-45PCN comes complete with connected-ready capability. The tool works with the optional Bosch GCY30-4 Bluetooth connectivity module to deliver next-gen user control and customization. PROTECTION: The angle grinder also features drop control which shuts the tool off after accidentally being dropped on the floor, for increased user protection, as well as Kickback Control to reduce the hazard of sudden tool reactions in binding conditions COMFORT: The Bosch GWS18V-45PCN angle grinder offers comfort with a dual side, Vibration Control handle with an ergonomic, soft-grip design, and a no lock-on paddle switch. The Bosch 18V brushless 4-1/2 inch angle grinder tool features paddle switch control and connected-ready technology for power and performance to handle tough grinding jobs.