Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Small Display, Very slow Calibration

I bought and used this scale for a few months to measure food quantities at each meal for a new fitness diet. The measurements and features worked great. The two main drawbacks (that led me to replace it with the Escali Primo) are:(1) the very small display size -- I have "young" eyes, so if I'm having trouble reading it, I'm sure many others would.(2) very slow calibration time (around 5-10 seconds average, but sometimes up to 20 seconds if it "feels" unstable), every time you turn on or tare. (This gets really old when you're measuring 5-6 different food items.)