Note:For the safe shipment, the battery is not included in the parcel, So we will OPEN the original packing and Take Out the battery, thank you for your understanding. Features: ▪ Comfortable mute button, safe to use without disturbing others ▪ Support three-speed DPI adjustment to meet various needs ▪ Easy to use, wireless USB connection ▪ Non-slip design, fits the palm of the hand, and feels comfortable to hold ▪ Clever design Screw-on battery cover design, front multi-function indicator Indicator function description 1. Adjust DPI ▪ First gear-800DPI The indicator light flashes once in red ▪ Second gear-1200DPI The indicator light flashes red twice ▪ Third gear-1600DPI The indicator light flashes three times in red 2. Battery Display When the battery is too low, the indicator light turns red Specifications: Product model: MWMM01 Working method: photoelectric sensor Resolution: 800/1200 /1600dpi Main material: ABS Input parameters: 3V--10mA Working temperature: 0°C~40°C Working distance: ≤6m Support system: It is recommended to adapt to windows 10 and above Or macOS 10.10 and above Package List: 1 x Wireless Mouse 1 x USB receiver MIIIW Wireless Slient Mouse Mute Button Comfortable Feel Multi-speed DPI Wireless connection