Slider Bluetooth Keyboard for iPhone 4S/4 ($49.99)

Gifts of accessories from concordkeystone.com make useful gifts to those on your list who want the most out of their smartphones and iPhones.

NautiCase ($49.99) – The durable NautiCase protects an Apple iPhone from coffee splashes, accidental falls, raindrops or snow with a high-impact polycarbonate hard case. A clear protective film allows full access to the touch screen without losing any phone functionality.

AmigoCase ($69.99) – The AmigoCase is a stylish, compact rechargeable battery pack that protects an iPhone when the phone is not in use. Remove the iPhone from the sleek charging case when it rings and use it without heft or bulk. When finished talking or texting, slide the iPhone back into its discreet wearable charging holster and the phone will continue to charge.

Solar/USB Power Pak ($49.99) – The Power Pak is a portable compact battery charger that powers up in full or partial sun or through a computer USB port. When fully charged, the Power Pak offers twice the talk time for smartphones, three times the music time for iPods and MP3 players and three times the video game usage time.

Booster ($49.99) – The ultra-thin Keystone ECO Booster portable battery pack works with Micro USB smartphones through a built-in retractable USB cable. It connects to the back of the smartphone with an attached adhesive pad to provide extended battery life on the go.

Slider Bluetooth Keyboard ($49.99) -- The Slider, designed for the iPhone 4S/4, aids those who prefer a physical keyboard to quickly and easily type e-mails, text messages and notes with accuracy and speed. With a flip of the finger, the keyboard quickly slides out and the virtual keyboard vanishes.

Aryca Wave and Aryca Tide ($39.99) – For those planning a vacation, Aryca cases protect smartphones at depths of up to 20 feet underwater or from a wild ride down the ski slopes. The heavy-duty waterproof smartphone cases fully encapsulate your smartphone and let you shoot video, capture images, view, play back and e-mail or text data to friends at home.

Concord Keystone products are available through Amazon.com or concordkeystone.com.