I did a short comparison online for different bathroom scales and this one had great reviews and was the least expensive.
When I received it, there was a plastic film covering the battery which was easily removed with a quick tug. The scale also has a button (near the top left if you are looking down on it) that can change the units to kg, stones / lbs and lbs.
The scale seems accurate so far and it looks quite nice though if anything, I think it would have been better without the small logo near the bottom. I also like the fact that it automatically turns off if you are not using it.
I don't have any quantitative data to back up my review but I can say that the bag is smaller than what I thought (though I suppose you only need a tablespoon or so for each smoothie or drink you make). It has a strong matcha smell to it and even only adding a tablespoon to my smoothies, I can still taste the matcha flavour which means it is quite concentrated. It's only been a few days so I can't say whether my energy or metabolism has improved but will keep trying; so far the product is good and if I see measurable benefits then I will update my review.
I have used this battery all over to charge all my devices - android phones, android tablets and the converters are great for charging a number of devices (I'm pretty sure I can charge my laptop if I chose the right converter). I think my only minor gripe with the battery is that it needs an AC charger to charge.
The LED lights help to determine the charge and the two output USB ports are great for charging multiple devices at once. It's a great travel battery because of this.