Delivered quickly. Not very bright, floating point, voltage level spread is acceptable, works from 2.4V.

Product arrived fast, everything came as described, I did the test and it's working OK.

Delivered in a month, could and faster, but this is not so important, everything is according to plan. The price was good-at the time of order-53,5 rubles for 1 piece. Good, working voltmeters. I always choose green at the best price at the time of order. I use them in my various crafts, experiments and experiments. Each sealed in an individual sealed bag. On top, the dial is protected by film. If you remove the ears, then the length is 23mm. Voltmeters can be precisely adjusted. There is a small screw on the back so that it can be precisely calibrated. It is true that the screw is very gentle, so it will not be possible to twist it endlessly. Hourly-increase, counterclockwise-decrease in readings. Be very careful! Usually, thanks to adjustment, voltmeters can be fine-tuned, but due to the non-linearity of the voltmeters, they can only be accurately adjusted to a small range, about 3-5 volts. If you set for example to 4.2 V, then the discrepancy in the region of 12,6 Volts will be about 0,1-0.2 V. Accordingly, if you set it exactly by 12,6 volts, then the discrepancy in the region of 4,2 Volts will be about 0,1-0,2 volts. For my tasks, control the Assembly voltage, that is, a narrow range (2-4 volts)-these voltmeters are suitable for all 100%. But the voltmeters from this seller pleasantly surprised me with the linearity of the readings! It is worth calibrating them and they show excellent accuracy throughout the range! I always take green ones, as they are the brightest. But one day, another seller sent yellow instead of green. I checked the consumption of both yellow and new green with a new multimeter and accurate power supply, and it turned out that the current at 4.2 V: -Yellow about 18ma -Green a little over 3 Ma!!! I. E. One yellow consumes as much as 6 green! 6 times more, And this despite the fact that the yellow ones are even dimmer!!! And more!!! In the photo, where there are 6 new green voltmeters from this seller and 3 yellow from another, I tried to set them all as accurately as possible at 4.2 V. New ordered Greens retain excellent accuracy on the entire range from 2,5 to 30 V, which cannot be said about yellow... Their readings are not linear... Exposed at 4.2 V, they are already 3-5 tenths of a volt by 20v and 30v. Recommend product and seller! 🤝👍✌️