A Perfect Ergonomically Designed Wirele Mouse, It does take some time to get used to using a mouse at a different angle. Once you get used to it, you will love it so much ! 1. Specification of AA battery : Color: Black Mouse size: 105.2*68.5*58.3mm Number of the Key: 6 Buttons DPI: 800-1200-1600 Power Source: 1 AA Battery(Not included) Service Time: Lifetime 2.Specification of Rechargeable : Connection: 2.4GHz wirele Working distance: 10m DPI: 1000/1600/2400 Powered by: 300mAh Li-ion battery Charging Indicator: Blue System required: Devices with USB port, Windows 7, Windows 8, Windows 10, Mac OS X 10.10 or higher version. Mouse Size: 104*67*58mm Product Description: The unique, upright and ergonomically superior design of the Wirele Vertical Mouse reduces harmful arm and wrist tension by allowing your hand to operate the mouse while remaining in its natural position. A new mouse for the 21st century. You deserve it! Ergonomic Design: A well-designed and contoured mouse body supports your palm and cradles your thumb and pinky finger. The ergonomic design allows smoother movement and prevents wrist strain caused by traditional mice High Responsivene: Simply pre the DPI button and switch between DPI levels 800, 1200 and 1600 to adjust the mouse's responsivene to suit whatever you're doing. Optical Tracking Technology ensures greater sensitivity for precise tracking on a wide range of surfaces Stable Wirele Transmiion Technology: 2.4GHz wirele technology can provide a reliable connection and not be subject to any interference in the 360 degrees within 10 meters. Enjoy the fast data transmiion at the convenience of the wirele technology Compact Receiver: The wirele tiny receiver can be inserted into the slot next to the battery slot, allowing ease of storage when not used Wide Compatibility: Compatible with most system including Windows 2000 / ME / XP / Vista / 7 / 8 / 10 / Mac /Linux etc, Fit for Notebook, PC, Laptop, Computer, and other device. Note:Not fully compatible with Apple products Advance Functionality: Added next / previous buttons provide convenience when web page browsing;The superior choice for internet surfers, gamers and people who work at the computer. NOTE: The vertical mouse can not fully compatible with Macbook, Mac os x operating system. The backward and forward browsing buttons will not work, and the scrolling is contrary to Mac. ( Because Apple company product only support its own system) About shippingShipping and Packaging All items will be double checked and well packed before sending.Items will be dispatched within 2 business days after buyers pay for the order. It usually takes about 14 to 18 working days for delivering the package to the destination(for remote areas,it may take a little longer). Special Announcement:Please fill in the correct and detailed consignee, address and phone number in the order. For fast and correct delivery.If you do not receive order within 30 working days,please feel free to contact Customer Service before leaving Negative and Neutral Feedback, we will do our best to help you resolve the problem.TaxNo, you will only pay what is quoted as total cost at checkout, no more. You are not expected to pay any additional duties or taxes. If you are asked by Customs or our logistic partner to pay duties, please contact our Customer Service .Your 100% satisfaction is very important to usIf the product is not on good condition, You can return this product within 14 working days, please contact customer service center before returning.FeedbackYour satisfaction is our first priorityIf you receive the order and it is in good condition,we would be grateful if you would leave us 5 star Positive Feedback for the transaction.