E-3lue Horizon Ultra-Thin Blade 2.4GHz Smart Power LED Wireless Optical Engine Mouse - Blue 100% E-3lue Horizon Blade Smart Power 2.4Ghz Wireless Mouse E-3lue Reliable Anti-interference 2.4GHz wireless connection with up to 10m working range. E-3lue's latest energy saving technology and power switch, you can use your mouse without power interruption for up to 9 months. Comes with a plug and play tiny Rapoo Nano receiver that stays in your computer - plug it in, forget it Contoured shape with soft rubber grips provide all-day comfort ,you can work comfortably all day long with this ambidextrous mouse