2.4g rf optical mouse Wireless: rf 2.4ghz 1) 2.4ghz wireless mouse 2) high resolution: 800~1000 dpi 3) button life: 3 million cycles 4) freely 360-degree use, max control distance: 10m 5) radio frequency: 2.4ghz 6) designed for usb applications 7) mouse battery: 3.7v/100ma polymer lithium-ion battery 8) telescopic wire:80cm/100cm/120cm selectable (charge and play) 9) use attention: when the built-in battery not work, this product can use 2 aaa alkaline batteries make it work, but when you useing 2 aaa alkaline batteries, please don't charge, because that will set the battery off