1. Laser PPT Flip Pen.\r\n2. 2.4G wireless technology, effective distance 10m.\r\n3. Page up / page down, volume plus / volume minus, laser presentation function.\r\n4. Simple operation, easy to use.\r\n5. Power supply: 3.7V (lithium battery).\r\n6. Support system: Windows, Android, Linux, Mac OS etc.\r\n7. Ergonomic design, provides support for your hand in a natural and comfortable position.