(1) 18V REVOLVE4000 Self-Leveling Horizontal Rotary Laser - GRL4000-80CH. (1) Laser Receiver with Bracket - LR40. (1) CORE18V 4 Ah Li-Ion Compact Battery - GBA18V40. (4) D Batteries. (2) AA Batteries. 18V Battery Charger. (1) Alkaline Battery Adapter - BA1. Carrying Case. Fully Featured Rotary Laser: Has dual dial-in slope, CORE18V power, bluetooth connectivity, uCAL user-calibration and more. Dual Dial-In Slope: Allows slope angle adjustment on both the X and Y axes. Dual Power Source: For extended runtime and option of a 4 Ah CORE18V battery or a battery adapter with 4 (D) cell batteries. Bluetooth Connectivity: Connects to a mobile device, linking to the free Bosch Leveling Remote App, to control sleep mode, dual dial-in slope, and more. Durable Design: Engineered with a cage rubber overmold and an innovative handle design to stand up to the toughest jobsites; built to IP68 dust and water-protection standards. uCAL: User-calibration guiding the user step-by-step to confirm tool status or calibrate the rotary laser to ensure accuracy on the jobsite. Long Working Range: Range of up to 4,000 ft. with laser receiver, the laser accuracy of +/- 1/16 in. at 100 ft.. Electronic Self-Leveling: Allows for easy setup and use on the job. Disturbance Monitor: Indicates if tool position changes, ensuring consistent leveling accuracy