Features:Portable and light weight design, weight only 77.5g including battery.Adopt anodized aluminum alloy and ABS material, beautiful and durable.Support BT 4.0 and RF 2.4GHz dual mode connect, convenient to use.Equipped with the high speed and high accuracy Laser Positioning, gives you the fast sensor to support office and home tasks using.Adaptive surface ability up to 95%, even can be used on the frosted glass, A4 paper and cloth surface.Ergonomic design, comfortable to hold, not easy to produce fatigue even when long-time use.Wide compatibility, it can be connect to Xiaomi TV, Tablet and Smartphone via BT.Powered by 2 pieces of AAA battery.(Battery included)