1. Large LCD screen, size up to 64x128 mm², easy to read and operate. 

2. Fast charging up to 100% power in 4 hours, about 1,000 measurements (eight hours)

3. Only 1.1kg, anyone can easy to operate.

4. Large storage capacity, a total of 1,024 standard values, 2,000 sets of measurements for storage, breaking the shortcomings of the previous storage capacity