Batteries included. A very clean unit! Thank you for looking and have a great day. The NSK Brasseler PAL Dental Apex Locator NE 181 is a precision apex locator specifically designed for dental use. This electronic device helps accurately locate the apex of a tooth root, ensuring precise and efficient drilling for dental procedures. With its advanced technology and reliability, this instrument is essential for dental professionals looking to provide high-quality care for their patients.