Logitech R400 2.4Ghz Wireless Presenter PPT Remote Control Pen, R400 Option:R400 Designed for active combat and

Designed for active combat and high noise applications

Battery Capacity 350mAh

5 meters above the ground in the bedroom

Video: Amlogic Video Engine (AVE) with dedicated hardware decoders and encoders

It will automatically increase the screen brightness under strong outdoor light

Logitech R400 2.4Ghz Wireless Presenter PPT Remote Control Pen, R400 Option:R400 Designed for active combat andTransmitter: 1. Laser color: red light 2. Wireless frequency: 2. 4GHz 4. Operating distance: about 15 meters 5. Laser power: less than 1mW 6. Power supply: 2 x AAA batteries (not included) 7. Size: 37. 8x115. 5x27. 4mm 8. Weight: 57g Receiver: 1. System: Compatible with Window Vista 7 8 2. Interface: USB 3. Size: 16. 5x58. 6x7. 9mm 4. Weight: 6g Specification: Package Weight One Package Weight 0. 12kgs 0. 27lb One Package Size 15cm * 8cm * 5cm 5.