Development time: 2 minutes
Temperature range +40°C - 20°C
Shelf life : 5 years at +25°C/20 years at +18°C
Weight: 10 grams
So what makes this different from the tags you simply slap on your arm? For one thing, it can be re-used again and again. And there is also a small chip in the case that records the detection time, date, and concentration of the gas.