1, Safety function: Patient's chair and backrest will be locked when using the handpiece,avoiding accident.    2, Movable cuspidor box. 3, Three rotation axis,adjustinig lighting to each angle of oral, the handle can be removed for clean and sterilization. durable,high brightness,energy-saving. 4, Big size instrument table,providing broad space for the dentist. 5, Built-in LED X-ray viewer, easy for the doctor to check the X-ray film 6, LCD display with all the operation informations and status of the dental unit. 7, Unique design of the balance arm ,underlines the perfect combining of stable,flexible,portable.