This is a pretty high tech scale. It will show you your current weight AND your previous weight. So you can see how things are going with your weight loss goal. And it will store information for up to four users. It is compatible with Bluetooth 2.0, and and optional USB Bluetooth adapater is available. The scale has a maximum capacity of 440 pounds.

I agree with previous reviewer about good points of this product. As plain scales, these are great and identical to HD351 (same product, but no bluetooth). As for the bluetooth capability, HD-351BT is a half-baked product, which may not be up to your expectations. Compared to its "no-radio" brother - HD-351, this one has an additional "OUTPUT" button, which allows you to establish a BT connection with remote BT peer (usually, a computer). Once you connect to other BT radio, your current weight measurement is sent over each time you press "OUTPUT". The catch is that you cannot switch scales back to local mode where you can see you previous weight or send your local profile along with your current weight measurement to the remote computer. All you can do is send one weight sample at a time and this is it. After that you need to walk to your computer and fill in your current profile manually.
Does it make sense to you? What's the point to have a BT radio and store 4 local profiles with 4 previous weights, if you can't send any of this information to your computer? Bluetooth on these scales can essentially be used only by 1 user - a big limitation for such an expensive thing in my opinion.

Besides, the plastic glass that covers LCD screen is too thin and breakes easily.

Otherwise, it is a great product, very accurate and reliable.