Specifications: 1:Item type: Ergonomic Optical Mouse 2:Resolution: 2400dpi. 3:Button: 4 buttons and 1 wheel (middle button) 4:Dimension: 100*80*70mm 5:Maximum operating range: 10m 6:Charging cable Length: 50.5cm 7:Color: Black 8:Material: ABS 9:Keystroke life: 10 million 10: system: optical 11:System Requirements:Windows 98/Me/2000/XP/Vista/Win 7/Win8. 12:Item weight :133g Features: 1:2.4GHz Wireless Connectivity (USB receiver & rechargeable mouse usb cable included) 2:Built in rechargeable battery 3:Ergonomic designed to remit and prevent carpal tunnel syndrome. 4:Optical laser technology for precise control 5:User convenience with wow-pen's signature, pen-grip comfort. 6:L/R mouse buttons, 2 thumb buttons, and a clickable scroll wheel 7:You pick the hand position that best suits you. Plug and play, compatible with and PC Note: 1, USB cable can only be used for charging. It can not be used as wired mouse. 2, The mouse can be used while charging, but you should make sure that the USB receiver is plugged into the computer and the mouse switch is turned on. Wireless Mouse 2.4GHz gaming game mouse Ergonomic Design WOWPEN Vertical mouse 2400DPI JOY Wrist Pain USB Mice For Laptop PC？ Notice:this mouse dont need to use AA battery now .it have battery inside the mouse!？you just used USB cable charging!!!! now did not need to worried to buy batteries？again again! This wireless mouse vertical ergonomic design for you, help you get rid of tireness after long use of the wireless mouse. Care more about your health. Avoid carpal tunnel syndrome Package includes: 1 x Mouse 1 x USB Power Adapter 1 x USB Charging Cable 1 x English manual" Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!