Wired USB 2.0, full speed, Type A

Microsoft Windows 10/8.1/7

4.63 x 3.03 x 1.66 in (117.5 x 76.3 x 42.3 mm)

4.15 oz including cable; 2.976 oz mouse only (104.5 g including cable; 75 g mouse only)

Black

1-year limited warranty

Mouse tracking system: Microsoft BlueTrack™ Technology
Imaging rate: Dynamically adaptable to 3,000 frames per second
X-Y resolution: 1,000 points per inch (39.4 points per millimetre)
Tracking speed: Up to 30 inches (762 millimetres) per second

Mouse button features: 5 buttons: left, right, wheel, side button ×2 (press and hold to pair) 
Scrolling features: Metal wheel for vertical scrolling and wheel button clicking
Customisable features:² Adjust X-Y resolution; reassign wheel button function; swap left and right click; customise wheel

Wired USB 2.0, low speed, Type A

Microsoft Windows 10
Limited functionality Windows 8.1/7 (Office and Emoji keys have no function)

19.13 × 10.28 × 2.92 in (485.8 × 261.2 × 74.1 mm) with front tilt leg

35.98 oz including cable (1020 g) with front tilt leg

Black

1-year limited warranty

Hot key features: Favourite keys (1/2/3), media keys (Mute/Vol+/Vol-/Music/Previous Track, Play/Pause/Next Track), Calculator, Snipping, TaskView, SysLock, Search

Customisable features:² Favourite key reassignment; media key reassignment; LED indicator management (Num Lk, Caps Lk, Scroll Lk); Enable/Disable Application key; Emoji key reassignment (can only be assigned to Application key)