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.

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).