Features:_x000D__x000D_It can adjust DPI in 3 levels, install 2*AAA batteries, and the decorative lights are colorful lights. The receiver is plugged into the USB port of the computer, and the mouse power switch is turned on to be used. You don't need to install the program, you can also operate while charging. _x000D_Left hand ergonomic vertical mouse. Designed for the left-hander, it is suitable for the natural position of the palm and wrist muscles. 6 programmable buttons. 800/1200/1600 dpi setting. _x000D_Plug and Play mouse with Nano USB receiver, easy to use, with standard settings. The back of the mouse is equipped with a storage box for easy carrying. _x000D_Automatic power saving: After 10 seconds in standby mode, the mouse automatically enters the power saving mode, and the sleep mode is 8-10 minutes. Two internet navigation buttons, back and forward, are conveniently located on the left side of the mouse, giving you internet browser control, minimal manual. _x000D_Broad compatibility: compatible with most systems, including for Windows, Mac and Linux. Suitable for laptops, PCs, laptops, computers, for Macbooks and other devices. _x000D__x000D_Specification:_x000D_Model: Five generations of left hand battery version_x000D_Type: Optical Mouse_x000D_Colour: Black_x000D_Mouse size: Big Mouse (120mm)_x000D_Connection with computer: wireless_x000D_Applicable models: laptop_x000D_Photoelectric resolution: 2000dpi_x000D_Number of buttons: 6 keys_x000D_Interface: USB_x000D_Color box packaging: yes_x000D_Size: Approx. 68 * 130 * 81 mm/ 2.67 * 5.11 * 3.18 in_x000D_Weight: 96 g_x000D__x000D_Package list:_x000D_1 * Wireless Mouse (Battery model 2 * AAA (not included))_x000D_1 * Wireless Receiver_x000D_1 * User Manual 1It can adjust DPI in 3 levels, install 2*AAA batteries, and the decorative lights are colorful lights. The receiver is plugged into the USB port of the computer, and the mouse power switch is turned on to be used. You don't need to install the program, y 2Left hand ergonomic vertical mouse. Designed for the left?hander, it is suitable for the natural position of the palm and wrist muscles. 6 programmable buttons. 800/1200/1600 dpi setting. 3Plug and Play mouse with Nano USB receiver, easy to use, with standard settings. The back of the mouse is equipped with a storage box for easy carrying. 4Automatic power saving: After 10 seconds in standby mode, the mouse automatically enters the power saving mode, and the sleep mode is 8?10 minutes. Two internet navigation buttons, back and forward, are conveniently located on the left side of the mouse, 5Automatic power saving: After 10 seconds in standby mode, the mouse automatically enters the power saving mode, and the sleep mode is 8?10 minutes. Two internet navigation buttons, back and forward, are conveniently located on the left side of the mouse