Features: brand new and high quality This 2.4 GHz Wireless Remote Red Laser- Pointer Presentation Black is small and exquisite, portable and with richer applications. An essential nice assistant of demonstrations or presentations, you can easily point to the PPT or blackboard in any corner of classroom. Making your demonstrations or presentation seem more dynamic and making listeners feel release. This laser- pointer is also the best gift for friends and families. No hassle setup, simply plug into your computer USB port USB receiver is plug and for play - no driver required. Power saving, lightweight, suitable for putting in your pocket or handbags. This high quality laser- pointer adopts the latest technology green laser- optics and microelectronics. Specifications: Transmitter : Switch: Button Material: ABS Light Style: Beam Light Light Color: Red Class: 3R Battery: 1x1.5V AAA Battery (Not Included) Size: approx. 10.5x3x4cm/4.13x1.18x1.57in Control Distance: 10m-15m (The effective distance will change with the environment.) Receiver : Material: ABS OS Supported: Win 2000, XP, Vista, Win7, Win8, Win10, for Mac OS, Linux Interface: USB1.1, USB2.0, USB3.0 Note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 1 x Wireless Presenter Remote Control 1 x Ultra-thin Wireless Receiver 1 x Manual