18V, 4-1/2", EC Brushless Connected Angle Grinder Kit, No Lock On Paddle Switch, Bluetooth Connectivity & Advanced Electronics, EC Brushless Motor Delivers Greater Runtime, Capacity To Transfer Up To 35% More Power & Up To 110% More Runtime Using Core 18V Battery, Bluetooth Connectivity Supplies Link To Free Bosch Toolbox App On Mobile Phone To Customize Settings & Provide Detailed Feedback, Includes: 18V Core Lithium Ion 6.3 Ah Battery, 18V Fast Charger, Vibration Control Handle, Wheel Guard, Grinding Disc & Carrying Bag.