Smart hydrometer and thermometer for home brewing.
About 8 cm long plastic tube with end caps. No other physical characteristics except for the lights which indicate status. It comes in 8 colours. The app can only recognize one of each colour at a time so it's important to know which colours you have. It takes a crazy camera battery. I'll link to it in the comments.
No specific accessibility features.
Overall, I'm very pleased. This device will help me to successfully brew beer at home. It's not perfect and I would like to see some improvements, but as a regular hydrometer is off limits to me and this does the job, I can live with the few shortcomings. See comments for full review