1Easy to use and calibration, only require 1 drop of sample, can easily test TDS / Brix. 2Suitable for home use and wine shop to test the wine concentration and sugar level to ensure making a delicious wine. 3Adopt linear CMOS sensor,this instrument has stable performance, high precision, high reliability, clear reading function. 4With large display screen, cool and modernized design, simple to operate and easy to read even in the dark. 5It also features IP65 waterproof, shockproof material, low power consumption, 10-50C automatic temperature compensation function.