The sleek, ultra-thin Comfort Curve keyboard of the Microsoft Wireless Laser Desktop 6000 v2 encourages natural hand and wrist positioning for unprecedented comfort and productivity. The included high-definition laser mouse adds greater performance, precision, and accuracy. Features: Battery status indicator. You'll know the power is low when the battery status indicator senses that battery life is running out. High definition laser technology. Microsoft High Definition Laser Mouse products are more precise, more responsive, and deliver smoother tracking. Ultra-thin Comfort Curve design.