Shop name:Chong Qing Shuo Yue Ke Ji You Xian Gong Si Smooth body line with Ergonomics design. Low consumption ,Smooth body. Small size,big ability,more multi-frequency measurement.The measurement is not affected by the types of teeth. The File clip, Lip and Touch probe can be by autoclaved sterilizer. Attention: Transportation restrictions,no batteries The main technical specifications: : Micropex Screen: 3.7' Screen Buzzer alert: The buzzer will alert when the file is less than 2mm closed to the apex. Colour: gray Material: plastic Package Contents: 1 Apex Locator (without 3 X AAA battery) Only the above package content, other products are not included. Note: Light and different displays may the color of the item in the a little different from the real thing. The measurement allowed error is - 1-3cm.