I accidentally bought two of the same product, so I'm selling one. It's brand new and unused. Brand: LEBREW Product Features: Provides optimized roast curves or roast plans by using data to better analyze and optimize the roasting conditions of coffee beans. Using Vis+NIR multi-spectral fusion technology, the accuracy error is reduced to ±1. At the same time, the fully enclosed measurement space physically eliminates natural light, making the data more accurate. Can test coffee beans and coffee powder in an ultra-wide sampling range of 0-150. This machine comes with a rechargeable battery. It has a 2000mAh battery capacity and a 2.31-inch high-resolution touchscreen with a clear display. Measurement Range: 0-150 Measurement Accuracy: +1 Thank you for looking.