-The core technology is advanced and sophisticated components, each layer is strictly checked, and the quality of the instrument is improved from the source. -Silicon photocell sensor, 200,000 LUX large range, low power consumption, high precision. -360° full angle, rotatable photoreceptor, making shooting more convenient. -Two measurement modes (foot-candle FC/lux LUX) can be switched by one button. -High accuracy, measurable low light, one-meter drop resistance, dust and water resistance.