Kensington Pro Fit Ergonomic Wireless Keyboard, Bluetooth - Black (K75401US) With its split and sloped keyboard with adjustable reverse tilt and built-in wrist rest the ergonomist-approved Pro fit Ergo wireless keyboard positions your hands for improved comfort Features include dual wireless (2 4 GHz and Bluetooth 4 0 LE) with 128-bit AES encryption security quiet typing spill-proof keys f-keys for shortcuts caps lock numbers lock and scroll lock A Three-mode power-saving switch and a replaceable receiver* * in the event the receiver is lost or damaged simply purchase a new one pair it with your mouse and you're all set Features Split and sloped keyboard with adjustable reverse tilt positions hands wrists and forearms for comfort and neutral alignment Dual wireless with 128-bit AES encryption security delivers the flexibility of 2 4 GHz and Bluetooth 4 0 LE with Government-grade encryption Quiet keys means typing is smooth easy and non-disruptive Spill-proof keys make cleanup fast and easy; Meets MIL-STD-810H Method 504.3 Contamination by Fluids testing for resistance to breakdown when exposed to cleaning and disinfecting solvents such as alcohol and bleach for at least 24 hours Three-mode power-saving switch allows you to toggle between 2 4GHz Bluetooth and off for best battery life Fast and Free Shipping You're already purchasing the item. Why pay additional for shipping, especially slow shipping? We get your order shipped out within 1-business day and delivered to your doorstep as quickly as possible. Competitive Pricing With our dynamic pricing model, our prices are always competitive. Our prices are some of the lowest that you will find on the internet. Rest assured that you're getting a good deal when purchasing with us. 30-day Money Back Guarantee We are committed to making sure that you leave this transaction satisfied. If you're unhappy with the product for any reason, you may return it back for your money-back or a replacement within 30 days. No questions asked!