Features for dental handpiece:1. E-generator LED handpiece2. Silver cartridge3. Professional LED light source， superior brightness， longevity 10000 hours4. Unique electric generator， just a little air can generate sufficient power5. Self-illumination without connecting circuit6. Perfect stable and reliable performance7. Push button cartridge8. 135▲C Autoclavable9. Triple water spray， more ideal cleaning effect10. High-grade material with a stylish design11. Warranty: one year for handle; six months for cartridgeTechnical Parameter for dental handpiece:1. Head: torque Standard head2. AIR PRESSURE AT THE BACK END OF HP: 250KPa--300KPa(300KPa preferred)3. AIR PRESSURE AT THE GAUGE IN THE DENTAL UNIT: 277-316 KPa (2.8-3.2 kgf/cm2)4. WATER PRESSURE:198Kpa (2 kg)5. ROTATION SPEED:300，000-450，000 rpm6. HEAD HIGHT:14.5 mm( standard )7. HEAD DIAMETRE:┵12.5 mm( torque ) ┵11.2 mm( standard )8. CHUCK TYPE:push button9. BUR APPLICABLE:┵1.59mm~┵1.6mm≠21mm~23mm (diameter≠length)10. NOISE:●60dBPacking list:1. LED handpiece integrate E-generator: 1each2. Cap: 1each3. Wrench: 1each 4. Operation manual: 1each 5. Needle: 1each