Thank you for viewing! This is an Elecom training dumbbell, 2kg! I received it new from an acquaintance a few years ago and used it a few times, but I'm selling it because I no longer use it. It has been stored at home, so the box is dirty. Please refrain from purchasing if you are concerned about this. <Product Description> This is a training dumbbell that correctly supports home training using the dedicated app "ECLEAR SPORTS". By doing dumbbell training according to the app's instructions, you can effectively train the muscles you want to build. You can choose the intensity from 5 levels according to your physical strength. You can choose the area you want to train from four options: upper arms, abs, arms, and shoulders. You can choose from two modes: muscle training and shaping, depending on your training goals. Weighing 2.0kg, it's the perfect weight for daily dumbbell training. A smartphone cover that supports smartphones up to approximately 7 inches (W approx. 85mm x D approx. 15mm x H approx. 165mm) is included, allowing you to train while looking at your smartphone screen. If you have any questions, please feel free to comment(^^) Thank you! ELECOM SPORTS Training Dumbbell that can be used with a smartphone attached Gray HCF-DBT20GY