A4tech LP15, 2.4G Wireless Laser Pen, White

A bright red light is easy to see against most backgrounds. Wireless range up to 100m,
free to move around the room.
Advanced 2.4GHz powerful wireless connection provides essentially no delays or connection conflicts.
Presentation pointer has low power indicate and reminds you to change battery in time.
Silicone Button
Magnetic USB Receiver Storage
Start or stop your presentation when you're ready or use the black screen to shift the attention back to you.