1. Divided into 4 gears, ??1 gear: 0.0 - 199.9Lux, ??10 gears: 20.0*10 - 199.9*10Lux, ??100 gears: 20.0*100 - 199.9*100Lux, ??1000 gears: 20.0*1000 - 199.9* 1000Lux 2. Can be connected by Bluetooth, easy to use 3. USB computer analysis software, data automatic / manual storage 4. Backlight and data retention, automatic switch meter settings 5. Good quality and long service life
