Full Details from Amazon.com : http://www.amazon.com/gp/product/B00L9WF7II?tag=onigi-20
FOME A-jazz X3100 Wireless Optical Gaming Keyboard and Mouse Combo Set 2.4G Waterproof and
24G ISM Automatic frequency hoppingeffectively avoid interference between wireless devices
24 G wireless transmission can be up to 10 meters barrier-free operation distance
Multiple auto sleep function saving battery
Low voltage alarm indicating function can remind to replace battery
Very responsive buttons feel good
