Ergonomic and handy: the ergonomic vertical design makes the uncomfortable during long work with a mouse effectively easier, the handy size for medium and large hand. Dimensions: 120 x 80 x 65 mm. 2.4 GHz wireless technology: thanks to the 2.4G wireless technology, you get a stable and reliable connection between the computer mouse and laptop, the range is up to 10 m, USB receiver is placed in the back of the mouse next to the battery compartment. 3 DPI settings and loud click DPI 800/1200/1600 is available. The button on the edge of the mouse allows you to adjust the DPI setting. The left and right buttons work almost silently, providing you a quiet working environment. Compatibility and operation: the wireless mouse is suitable for computer / PC / laptop / MacBook with Windows / Mac OS X / Linux, the side buttons are unusable under Mac. PoweRed by 2 AA batteries (not included). Box contents: 1 x wireless mouse, 1 x 2.4GHz USB receiver (in the back of the mouse next to the battery compartment), 1 x user manual. Production Size Name: WGSB-016 2.4G Wireless Ergonomic Vertical Mouse with USB Ergonomic design with portable handy dimensions, ideal for long work with mouse. 2.4G wireless technology, stable and reliable connection with your device without cable. 3 DPI levels 800/1200/1600 available, more precise than normal computer mouse. Silent running, the click with the mouse is almost inaudible. Please note: the side buttons (forward, backward) are not silent. Long lasting buttons Buttons can be clicked up to 5 million timesNo additional setup requiRed, play and plug. Universal compatibility, compatible with notebook, laptop, PC with USB port with Windows 2000 / ME / XP / Vista / 7/8/10 / MAC / Linux. The side buttons are unusable under Mac Box contents: 1 x ergonomic wireless mouse. 1 x USB receiver (placed in the back of the mouse next to the battery compartment). 1 x short operating instructions.