Feature:1. Optical Handheld Mouse: 2.4G Mini Wireless Ring Mouse is a great help for users who always take their laptop out for business. You can type while using the mouse. Tip: For users who are used to typing with 2 hands, it may not be so convenient.2. Wide compatibility: wireless finger mouse is compatible for Android smartphones above 4.0, Android tablets, , desktops, laptops, etc.Description:Product name: Wireless Finger Ring MouseColor: BlackMaterial: plasticProduct Dimensions: 63 x 26 x 24 mm or 2.5 x 1 x 0.9 inchesProduct weight: 32g or 0.07lbsReminder: 1. For those who are accustomed to using ordinary mouse, it only takes a while to operate this new product smoothly. 2. Adjust the elastic ring according to the size of the right finger, but not too tight, so as not to affect the blood circulation.Package Contents:1 x 2.4G Wireless Ring MouseOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.