The new Samsung Galaxy S4 smartphone now has a slide-out Bluetooth keyboard case available for $79.99 to complement the all-touch handset.

While the trend nowadays seems to be for increasingly bigger smartphones with all touch and virtual buttons, some users would still like to feel a physical keyboard when they have to type long texts or emails.

The Samsung Galaxy S4 is already incredibly popular and the best-selling smartphone of 2013. However, for those who would like the option of a physical keyboard, theavailability of a slide-out Bluetooth keyboard case from Hypercel, will increase the appeal of Samsung Galaxy S4 even more.

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

The Samsung Galaxy S4 slide-out Bluetooth Keyboard pairs over Bluetooth, as the name suggests. The accessory features a QWERTY keyboard with LED back light, which means users can easily type in darker environments as well. The slide-out Bluetooth Keyboard has a 280 mAg lithium rechargeable battery that takes two hours to charge and offers up to eight hours of usage and 45 days of standby time.

Those concerned about battery life will also be happy to know the slide-out Bluetooth keyboard for the Samsung Galaxy S4 features a built-in on/off switch that allows for battery conservation. The keyboard uses its own case to attach to the Samsung Galaxy S4 and does not compromise access to ports and buttons in any way.

The Adjustable Stand Function, meanwhile, allows users to adjust the keyboard from 0- to 90-degree angles, according to their needs and preferences. The keyboard measures 5.46 x 2.87 x 0.86 inches.

All in all, it's a neat and useful accessory that allows Samsung Galaxy S4 users to enjoy both the full-touch handset and a full-QWERTY keyboard for more extensive typing. The design looks good enough and goes fairly well with the Galaxy S4's overall look. It's easily attachable/ detachable, so users just need to snap it on for a full QWERTY experience, or take it off for the full-touch daze.