Here are three finger mice. They are being sold as junk because they may be broken, as described below. Please understand this before purchasing. 1. VANZY This is the first version of the VANZY. It can be charged, but I'm not sure if it's because of my usage or if it's broken, but the pointing doesn't work well, and the gestures don't function. There are no instructions or accessories. It does have the charging attachment. The connector is Type-C. 2. Finger Mouse A This is a barrel-shaped finger mouse. It connects via Bluetooth and 2.4Ghz, but there is no 2.4Ghz receiver. Bluetooth operation has been confirmed. It shows signs of use. It is rechargeable, and the connector is Type-C. If you can tolerate the weight on your fingertip, it's surprisingly usable. 3. Finger Mouse B This is a slightly smaller finger mouse. However, it might still be a bit difficult to keep this on your fingertip. It uses batteries. It connects via Bluetooth. I confirmed its operation, but the tracking feels a bit off. It shows signs of use. The click feel is the best. To reiterate, I have tested the above items, but it's unclear whether they are slightly broken or if the product's performance is simply not very good. Please understand this before purchasing.