The buttons are easy to press and give a distinct tactile click. The lid of the scale opens and closes easily without contacting the weigh boat or changing the tare, it can also be left in the half open position shown which gets it out of the way and is not heavy enough to tip the scale.

Included is the scale, TWO 10 gram calibration masses, a measuring bowl and a pair of sharp smooth tip tweezers all contained securely in a carrying case.

I would say that this scale is ideal for measuring within the range of 15 milligrams all the way up to 19 grams with a repeatable measuring accuracy of +/- 1.5 mg in the 10 mg to 500 mg range and an accuracy of +/- 3 mg in the 500mg to 19 gram range - these numbers are based on my own testing using professional calibration weights and comparing readings between this scale and a Mettler-Toledo balance in my lab that costs orders of magnitudes more than this little guy.