Chair type dental x-ray unit, space saving design. Seat height adjustable by air pressure. Tube arm can be extended up to 70cm and turned 300°, user-friendly and easy to operate - coil spring support- height adjustable between 139cm-127cm. The exposure dose is at 70 kVp and 10 mA—high film speed reduces patient's exposure to radiation. The focus spot of the x-ray tube is at 0.7mm x 0.7mm, as a smaller focus spot contributes to higher image quality.