Presentation remote Height: 5.28 in (134 mm) Width: 1.50 in (38 mm) Depth: 1.10 in (28 mm) Weight: 2.50 oz (71 g) Receiver Height: 2.31 in (58.6 mm) Width: 0.65 in (16.5 mm) Depth: 0.31 in (7.9 mm) Weight: 0.21 oz (6 g) Technical Specifications Laser Laser Class: Class 2 laser Max output: Less than 1m W Wave Length: 522542 nm (green light) Battery Battery type: 2 AAA batteries Battery life (Laser pointer): 20-hour maximum Battery life (Presenter): 1050-hour maximum Connectivity Wireless technology: 2.4 GHz wireless technology Operating distance: Approx 98.43 ft (30 m) 1It may vary based on use and computing conditions.