Refined and compact, with a high-quality finish and a convenient non-slip scroll wheel, M100 transmits using Rapoo's latest and powerful multi-mode wireless featuring Bluetooth 3.0, 4.0 and 2.4 GHz.. The ergonomic compact design is boosted by a ‘silent click’ feature, which gives you freedom and a piece of mind since disturbing those around you is no longer a concern. All this, combined with the high-resolution 1000 DPI sensor, makes surfing and clicking a joy. The included Nano USB receiver can be stowed securely and conveniently within the base of the mouse. To top it off, Rapoo’s power-saving technologies offer up to 12 months’ battery life.