technical parameter: 1. Dual-mode mouse 2.4Ghz wireless mouse and Bluetooth 5.1, metal massage wheel. 2. 10M wireless receiving distance, more convenient to use. 3. Three-speed DPI adjustment design, 800,1200,1600. (The default is 1200dpi). 4. Metal wheel, silent design, quiet and elegant office wireless mouse. 5. High resolution: 1600 DPI high resolution, smooth movement, support office and game use. 6. Stylish and slim design: slim design, easy to carry, there are 6 colors to choose from. specification: 1. Brand/Model: M50 dual-mode mouse 2. Color: black, silver. 3. Material: ABS 4. Key life: 5 million times 5. Wireless distance: 10m 6. Work: photoelectric 7. Battery capacity: 500mAh (rechargeable lithium battery) 8. Charging cable length: 25cm 9. Project Type: Ergonomic Optical Mouse 10. Resolution: 800,1200,1600. (Default 1200dpi) 11. Operation mode: photoelectric 12. Rated voltage/current: 3.7V/18mA 13. Type: 2.4Ghz wireless mouse and Bluetooth 5.1 dual-mode mouse 14. Buttons: 4 buttons (left and right buttons, metal scroll wheel and dpi) 15. Power supply type: rechargeable (charging time 2h, working time 150h) 17. Product weight: 73g 18. Product size: 10.8 * 6.1 * 2.9cm 19. Package weight: 94g 20. Packing size: 12.5 * 7.5 * 3cm packing list: 2.4 G wireless mouse x1 USB receiver x1 USB charging cable (25cm) x1 Three-level power saving mode: 1. Three seconds into the sleep light flashes continuously 2. Enter into second sleep about 1 minute, intermittent flashing lights 3. About 8 minutes, enter level 3 sleep, the lights go out Applicable system: Windows (Windows XP / Vista / 7/8 / Server 2003 / 2000/Win10, etc.) Mac IOS (Mac OS 10.10 or above is recommended) In 2.4G mode: Suitable for desktop computers, notebook computers, smart TVs with USB interface, etc. Installation and use steps: 2.4 mode wireless connection use: 1. Remove the wireless mouse from the box. 2. Remove the mini receiver installed on the bottom of the mouse and plug it into the USB port of the computer, Free code, plug and play. Bluetooth mode use: Turn the switch to the position of the Bluetooth symbol, you can directly find the Bluetooth 5.1 logo on your computer and mobile phone, and you can use it after connecting. note: Bluetooth mode does not support Apple mobile devices, such as Apple mobile phones. This product is a built-in lithium battery. You only need to set the bottom switch to the ON position. The charging cable is included in the package. When the cursor movement delay occurs, please plug the charging cable into the front interface of the mouse to charge. When charging, the mouse can be used normally.