#1 Vertical Mouse - Ergonomic Vertical Mouse

Features: Low-voltage alarming function  Wireless distance can reach 10 meters  Supports palm and eliminates wrist strain 2.4 GHz Wireless optical mouse, comfortable touch  Ergonomic design, optical tracking technology, working on many different surfaces and ideal usage for home, office or game.  Notes: Forward and backforward button of the mouse is not suitable for Mac. It sleeps to stop working when the mouse is paused for 3-5 minutes, it is OK to move the mouse slightly. when the mouse is paused for about 8-10 minutes,it is OK to press the left and right button of the mouse. Specifications: Net weight: 109 g / 0.2 lb Wireless Distance: 10 m Power: 2 x AAA Battery (not included) Size: 12.3 x 7.4 x 6.8 cm / 4.8 x 2.9 x 2.7 in Package includes: 1 x Wireless Ergonomic Vertical Mouse 1 x USB Receiver