With over 10 million units sold just within 30 days of release, the Samsung Galaxy S4 is undoubtedly the best-selling Android smartphones of 2013. The all-touch handset now has a slider keyboard for those who want the convenience of a physical keyboard without switching to other smartphones with a keyboard.

Samsung released the Galaxy S4 in the market in April and the handset has already found its way into the hands of millions of customers worldwide. Many customers are attracted to its 4.99-inch display while other picks the phone for its speedy performance. However, some customers who use their handsets for frequent texting may not want to use the touch display. Customers who want the ease of a physical keyboard now have the option to add the Bluetooth Slide-out Keyboard to their handset.

The product description of the sliding Bluetooth Keyboard for Galaxy S4 says, "This Bluetooth Slide-out Keyboard for Samsung Galaxy S4 provides quick access to all controls, features, camera, and ports. Conveniently designed slide-out keyboard allows you to switch from the touch screen to keyboard."

The sliding Bluetooth Keyboard pairs over Bluetooth connectivity and features a slide-out QWERTY keyboard, which also has LED back light, which allows you to type even in the dark. The sliding Bluetooth Keyboard is powered by a 280 mAh lithium rechargeable battery that charges within 2 hours and gives up to 8 hours of usage and 45 days of standby time.

The keyboard also has an in-built on/off switch that lets you conserve battery life. The Adjustable Stand Function lets you conveniently adjust the keyboard from 0 to 90 degree angle. You just need to snap in your Galaxy S4, connect it and you'll get a fully functional QWERTY keyboard for use.

The keyboard measures 5.46 x 2.87 x 0.86 inches and has a price tag of $79.99.