Product details of Logitech R400 – Wireless Presenter Black

• Dimensions (height x width x depth): 1.49 in (37.8 mm) x 4.55 in (115.5 mm) x 1.08 in (27.4 mm)
• Weight: 2.01 oz (57 g)
• Receiver Dimensions (height x width x depth): 0.65 in (16.5 mm) x 2.31 in (58.6 mm) x 0.31 in (7.9 mm)
• Receiver Weight: 0.21 oz (6 g)
• Laser Class: Class 2 Laser
• Max Output: Less than 1mW
• Wave Length: 640～660nm (red light)
• Battery type: 2 AAA batteries
• Battery life (Laser pointer): 20-hour maximum
• Battery life (Presenter): 1050-hour maximum
• Wireless operating distance: Approx 10m*
• Wireless technology: 2.4 GHz wireless technology
• Supported OS: Windows Vista, Windows 7, Windows 8
• Interface: USB