| model | V-T3 | V-T3A |
| Optical system | Self-aligning, 1200 line / mm holographic grating | |
| Spectral bandwidth | 4nm | 2nm |
| Wavelength range | 320—1100nm | |
| Wavelength accuracy | ±0.8nm | |
| Wavelength repeatability | 0.4nm | |
| Wavelength display | 0.1nm | |
| Photometric accuracy | ±0.5%T | |
| Photometric repeatability | ±0.2%T | |
| Photometric range | 0-200℅T,-0.3-3A,0-9999C(0-9999F) | |
| Stability | ±0.002A/h(500nm, After warming up ) | |
| Data Display | 128×64 Dot-matrix LCD | |
| Stray light | ≤0.1%T, At 360nm | |
| Operating system language | Automatic switching between English and Chinese | |
| Data output | USB interface, Centronics parallel port (optional micro-internal and external printer) | |
