Secure Radiation Efficient Portable Dental X Ray UnitFeatures: 1. Radiation volume is in accordance with international standard (IEC601 1 3. 1993), highly secure for human. 2. Flexible adjustment the position and angle of hand piece, simple and easy to handle. 3. Develop dental film in daylight. no darkroom needed. 4. Compact in volume ,light in weight . convenient for carrying. 5. Time is adjustable, high contrast of picture imaging in focus. 6. Can be used with sensor. 7. No protective operation rooms