Product Model：Wirele Vertical Mouse About This Item Ordinary Mice Force Your Arm Into An Unnatural, Twisted Position For Hours On End. The Mouse Is Only Used For Right Hand This Ergonomic Vertical Mouse Employs An Angled Slope To Keep Your Wrist In An Ergonomic Neutral Handshake Position. Extended Lip Support For Your Little (Pinky) Finger Enables More Smooth And Comfortable Movements Of The Larger Muscle Group. Traditional Mouse Use Wreaks Havoc On The Muscles In Your Arm And Can Lead To Carpal Tunnel, Arthritis, Tendonitis And Ouch – Pain! That Is Why Created The Mouse. Four Button Control – Left Click, Right Click, Forward & Back (For Web Page Browsing); A Scroll Wheel Provides Convenient Scrolling. It’S Scientifically Designed By Orthopedic Experts To Alleviate Wrist, Elbow And Shoulder Pain. It Also Offers Comfort And Muscle Support; It Feels Like Gliding In Zero Gravity. It’S Time To Work And Game Without Any Pain! Size: 123*75*62Mm Weight: 111G Connection Technology:2.4G Wirele Connection Transmiion Distance: 10 M Working Method: Photoelectric Power Mode:2 Aaa Batteries Material: Abs DPI:800-1200-1600 Product List: Mouse+Usb+Instruction Manual Product details Long battery life: Thanks to energy-saving engineering, the battery replacement interval can reach 18 months, and the silent mouse automatically goes to sleep when not in use to save battery life Universal design for both left and right hands: This wireless mouse is ergonomically designed, more comfortable and precise than a touchpad, suitable for left-handed and right-handed users, and small enough to be carried in a bag Vivid color options: Personalize your workspace with the eye-catching colors of this wireless mouse, adding a touch of style to your desk. Portable and durable - The USB receiver plugs into a PC USB port and can be conveniently stored inside the wireless mouse when not in use. Perfect for work and play at home or in the office.