Rechargeable Li-ion battery(6 hours), 2500mAh Measurement Illuminance meter function: Conditional support measure illuminance under 30C from 70 to 70, 000 Lux.
Grating: High tech. MEMS grating
Sensor: CMOS Linear spectrum image sensor
Cosine receipt area: 6.6mm +/-0.1mm
Wavelength Accuracy: +/-0.5nm(Measured under constant light input conditions)
Dark Calibration: Yes
Operation Tempt.: 0~35C
Storage Temperature: -10~45C