This is a mobile-powered laser presenter for professionals. It is delicately engineered to fit inside the 3.5 mm headphone mini jack. With a simple 90° on / off switch, the hybrid design allows the device to stay plugged in without affecting phone speaker function. Supported by free iPin app and computer host program via Wi-Fi connection, you can control presentation straight from your phone. No more fumbling for new batteries or misplaced laser pointer! iPin Laser Presenter helps you to be presentation-ready anytime, anywhere. Features: laser pointer, on / off switch, intuitive gesture control, low power consumption, page up / down, time alarm, mouse trackpad.