MICROSOFT Surface Egér Arc Light Gray InterfaceBluetooth® 4.1Wireless frequency2.4GHz frequency rangeButtons2 buttons, right and left clickDesignBendable tailScrollingFull scroll plane, horizontal and vertical scrollingCompatibilityWindows 11 Home/Pro / 10 / 8.1 / 8* Host must support Bluetooth® 4.0 or higher. (Note: many Apple and Windows 7 devices do not support Bluetooth 4.0. ) Weight2.91 ounces (82.49 grams) including batteries; battery weight may varyBattery2 AAA alkaline batteries (included)Battery lifeUp to 6 monthsAvailable colorsBurgundy, Light Gray, Cobalt Blue and new Limited Edition Aqua Footnote1 Warranty1 year limited hardware warrantyDimensions5.17" x 2.17" x 0.56" (131 mm x 55 mm x 14 mm)Wireless range32.8 feet (10 meters) in open area and 16.4 feet (5 meters) in office environmentTechnology detailsMouse tracking system: Microsoft BlueTrack Technology Imaging rate: Dynamically adaptable to 1200 frames per second X-Y resolution: 1000 points per inch (39.4 points per millimeter) Tracking speed: Up to 30 inches (762 millimeters) per secondProduct feature performanceMouse button features: 2 buttons, left and right click Design features: Bendable tail Scrolling features: Full scroll plane, horizontal and vertical scrolling