| Technical specifications | NH300 | NH310 |
| Measured geometry | 8/d | 8/d |
| Optional measurement aperture | 8mm | 8mm/4mm |
| Detector | Silicon photodiode | Silicon photodiode |
| Colour the light source | LED blue light excitation | LED blue light excitation |
| Difference between instruments | ≤0.40ΔE*ab | ≤0.40ΔE*ab |
| Storage | 100 standard 8000 samples | 100 standard 8000 samples |
| Repetitive | 0.10ΔE*ab Measure the average value of the white standard plate 30 times | 0.08ΔE*ab Measure the average value of the white standard plate 30 times |
| Weight | 500g | 500g |
| Size | 205×70×100 mm | 205×70×100 mm |
| Power supply | Rechargeable lithium-ion batteries 3.7V@32000mAh | Rechargeable lithium-ion batteries 3.7V@32000mAh |
| Lamp life | More than 1.6 million measurements over 5 years | More than 1.6 million measurements over 5 years |
| Charging time | About 8 hours - 100% power | About 8 hours - 100% power |
| Number of times can be measured after Charging | It can be measured 3000 times in 8 hours | It can be measured 3000 times in 8 hours |
| Operating temperature range | 10 ~ 40 ℃, 0 ~ 85% relative humidity (no condensation) | 10 ~ 40 ℃, 0 ~ 85% relative humidity (no condensation) |
| Data interface | USB interface | USB interface |
| Extended diameter (optional) | Φ 8 mm longer caliber, concave part can be obtained | Φ 8 mm longer caliber, concave part can be obtained |
| Printer (optional) | Micro thermal printer | Micro thermal printer |
