More convenient with a flexible contra-angle handpiece with 360-degree rotation for the preparation of all tooth positions. Detachable contra-angle handpiece with 134-degree high-temperature sterilization. Specifications: - Power Input: 220V 50Hz / 115V 60Hz. - Water pressure: 0.1bar~5bar(0.01MPa~0.5MPa). - Warranty: 2 Years.