Features 1. Reciprocating Frequency: 14000 Times/min; reciprocating amplitude: 2.5mm-5mm; stepless speed regulation; 2. Anti-sheath functions for the saw blade to protect the soft tissue from injury during chest surgery operation. It is suitable for thoracic surgery. 3. Battery voltage: 14.4V; exempt from disinfection design; 2 batteries; 4. Safety saw removing device; 5. Low noise design of mechanical structure and components 6. Strong host power, conjoined closed cover; 7. Suitable for high temperature sterilization; 8. Along with 5 pieces of saw blades