Parameters
| Technical Name | Technical Indicators |
| Outer Diameter | 7 options (2.8mm,3.1mm,3.8mm,3.9mm,4.8mm,5.2mm,5.8mm) |
| Channel Inner Diameter | 2 options (Without & with working channel) Working channel:1.2mm,1.5mm,2.2mm,2.6mm,2.8mm |
| Curved angle | upward≥180° downward≥ 130° |
| Visual Field | 90° |
| Observe depth | 3-50mm |
| Working length | >380mm |
| Rotating angles of the working tube right and left | 240° |
| Discharging time of battery | >240min |
| Illuminace(LUX) | ≥ 200 Lux |
| Power supply | Rechargeable 18650 3.7 lithium battery |
