I got this from the Revain Vine range. Here's what I found: 1. The device is very nicely made! The charger features multi-country plugs that can be quickly swapped out so you have exactly what you need. Not sure how many people need plugs for different countries but they are available and it also means you can order them no matter what country you are in. 2. The supplied lithium battery is not fully charged as expected. So I connected the charger as directed. This led to great disappointment that there is NO loading indicator! It also doesn't show on the LCD that it's loading. So is it charging or not? Is the plug you connected to the charger live or not? The only way to find out is to turn on the device after a while and see if the battery gauge shows more battery life bars. 3. In terms of usability, the device is very easy to use. One thing that can be confusing is turning off the device. They claim that you have to long press to turn it off and the device counts down from 3 to turn it off. They mean that you have to HOLD the power button CONTINUOUSLY during the countdown! If you don't, it won't turn off and you can start over to turn it off. If you don't want to mess with it, the device will turn itself off after 30 minutes of inactivity. The display is large and very easy to read. You can easily set alarms for points you want to know if they've been met, and it's easy to turn them off. The only thing to note is that this is an instant read and NOT a storage device. So when you walk you can have very different shapes as you walk on areas of volatile materials as they are likely to be distributed unevenly when used. If you enter a room with a new carpet that has been in place for some time, the readings will become more stable. No problem if you know he will and you know why. Overall, this is a very functional and easy-to-use device that comes with additional features such as a convenient carrying case and multiple ports for most countries.
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