The bright and vibrant colors give your desktop or laptop computer an appealing look. Advanced 2.4 GHz powerful wireless connection with a range of up to 10-15 meters. Auto-channel stabilization and the plug-and-leave nano receiver essentially eliminate delays or connection conflicts. Longer battery life due to energy-efficient technology. Extreme quality with a guaranteed lifespan of 12 months. A professional chip ensures greater distances and more stable connections. Adjustable 4-level power saving. It enters sleep mode after 0.2 seconds of inactivity.