User manual LOGITECH VX NANO CORDLESS LASER MOUSE

[. . . ] If cursor movement is slow, change wireless channel by pressing the power button for 5 seconds. [. . . ] This optical device complies with International Standard IEC 60825-1: 2001-08, Class 1M Laser Product Invisible and also complies with 21 CFR 1040. Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure. A Class 1M Laser Product is safe under reasonably foreseeable conditions of operation, but may be hazardous if the user employs optics within the beam. Viewing the laser output with certain optical instruments (for example, eye loupes, magnifiers, and microscopes) within a distance of 100mm may pose an eye hazard. In the absence of proper operation and if troubleshooting is unsuccessful, switch off the device and call Logitech technical support. Do not attempt to disassemble your product unless it is for end-of-life disposal. Do not operate your product when the temperatures is outside the specified operating range of 0°C (32°F) to 40°C (104°F). In case of exposure to out-of-range temperature environment, switch off the device, and allow temperature to stabilize within the specified operating temperature range before operating. [. . . ] Your product comes with a 3-year limited warranty and is FCC and CE compliant. [. . . ]