The top portable battery on the Aira suggested products list. You can see all their the suggested products, including ours, here:

Click here to see the Aira suggested product list

This portable 15,000 mAh battery is a power bank specifically designed for the visually impaired.  It can be used to charge an array of digital devices including iPhones, iPads, iPods, Android smartphones and tablets, Bluetooth headsets, MP3 players, GPS, and more.
Indicator Features for the Visually Impaired:
Sound or vibration signal for battery level indication
Battery level at any instance is indicated in different sound or vibration patterns.
One to four tones and vibrations indicate the remaining power left in the battery. Fully charged, the battery will sound four tones and emit four vibrations. Each tone and vibration represents 25 percent with a total full battery with four tones being 100 percent to 75 percent full, three being 75 percent to 50 percent full, two being 50 percent to 25 percent full, and 1 being 25 percent or less.
All this can be easily checked by pressing the single button on top one time.
Output power connection confirmation
Sound and/or vibration signal to indicate successful connection between any of the USB outputs and the digital device being charged.
This will be indicated by two tones and vibrations sounding three times separated by several seconds between each sound. After three times, the battery is silent until another action is performed.
 Input power connection confirmation
Sound and/or vibration signal to indicate successful connection between the micro-USB input and the power source for charging
 This is indicated by a single tone and vibration sounding three times with several seconds between each sound. After three times, the battery will be silent until another action is performed.
Reversible USB output ports
User can easily connect any USB charging cable without worrying about the plug's orientation or the cable's direction.
The full sized USB end of your charging cable for your device will go in no matter which way you have it turned. You will never have to worry again about which way you have the USB turned as it will go in the ports whichever way you have it turned. Imagine a USB port that acts like an Apple lightning port where there is no right or wrong way in which to plug in the USB plug. This is a major innovation in USB plugging.
 Optional sound and vibration alert modes
Easily switch between sound and vibration modes by simply pressing a single button.
Press and hold down the single button on top of the battery to switch back and forth from tones and vibration to vibration only. Use it in vibration only mode to be able to discretely check the battery level without alerting or disturbing anyone around you. Perfect for areas where quiet is a must, or when you find yourself in a loud crowded area where tones cannot be heard. Instead, feel the vibrations rather than try and hear the tones. Perfect for any environment or situation you find yourself in.
 Tactile marks
This accessible power bank is marked with raised-dots for easy accessibility.
The full sized USB ports used to charge your devices are marked with two raised dots and also when plugging in a device to charge, the battery emits two tones that corresponds with the two tactile raised dots.
The micro USB port used to charge the power bank is marked with a single raised dot and therefore, emits a single tone when plugged in to correspond with the single raised dot.
Leading-edge Technical Features
This accessible power bank is loaded with leading-edge charging technologies and features, bringing users a fast yet safe charging experience.
With 15,000 mAh of power, you can go days without ever having to charge this power bank. Charge an iPhone up to 4 or 6 times, an iPad 2 times, and various other combinations.
Beautiful modern sleek and stylish design that looks as great as it functions. Style and functionality define this amazing power bank with a glossy hard plastic finish on the top and bottom with a brushed hard plastic trim around the side. Extremely lightweight for its capacity and a minimal size that will easily fit in a pocket, purse, jacket pocket, bag, etc.
Dual USB ports provide the ability to charge two devices at once as well as charging higher amp devices like iPads, tablets, etc. It is easy to see, that this portable power bank has it all. One of the most innovative and definitely the most accessible portable power banks anywhere in the world and on the market.
Includes a nice velvet drawstring carry pouch and a micro USB charging cable to charge the battery and can be flipped around to charge any other micro USB device. Use your other devices own cables to charge devices that ar not micro USB.

Dimensions: 5 and a inches long, 2 3/4 inches wide, and less than an inch thick

Weight: 10 ounces

Condition: Brand new in box.

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Tired of the old traditional horrible micro USB cables? After you experience one of these, you will never go back!

This is a USB to Micro USB charging cable bringing the visually impaired a totally free
 charging experience. Simply connect any charging device or gadget without worrying about the plug's orientation or the cable's direction. This USB to Micro USB cable can connect to any standard USB and micro USB ports, no matter what the manufacturer or the type of gadget actually is. 
Product Features:
Reversible USB connector
Reversible micro USB connector
4 Feet in length
 Quick Charge Technology
Heavy Duty rubber tangle free cable with metal connectors on each end
 Technical Features:
 22AWG super-fast charging threads inside (supports 3.5A high-current transmission)
 24K pure gold-plated connectors and 4N (99.99%) oxygen-free copper threads for the optimal power transmission
 High-density triple shielding significantly reduces interference
 Data transmission capability.

We also offer these in 6 feet. See below link:

Click here to purchase this cable in 6 feet

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These magnetic cables and adapters will be the last cables you will ever need. Safely charge your devices without fear of damaging the plug or cable if accidentally and suddenly pulled on cable or device.
no more worries about switching cables for different devices for charging and data transmission
Fast charging speed - Ensure a safe charging at 2.4A Maximum and the speed of data sync up to 480 Mbps..
Strong magnetic and not easy to fall off
Support data transfer and charging
Mini charging pplug design is small enough to fit most of the phone cases
One-sided LED indicator makes it easy to find at night. Fast Charge and Data Transfer. High-quality copper wire increases signal quality and durability
EXTRA Durability
The cable has a durable Nylon Braided design with an aluminum alloy connector which makes it easy to survive everyday usage and gives it a more stylish and elegant appearance that goes great with your expensive devices.
Compatible with micro USB and Apple 8 pin lightning devices.
Product information
8 pin lightning plug is Apple MFI certified so no accessory not supported messages.
Rugged and tangel free Nylon cables insure long lasting and great user experience
Each end of the cable is made with rust free aluminum alloy connectors and plugs making these cables solidly built
Use only one cable to charge all your devices.
Leave the charging tip plugged into your devices without continuously plugging and unplugging the charger and eventually loosening and damaging your device's charging ports.

What's in the box:

1 x 5 foot nylon braided tangle free magnetic cable

1 x Apple Lightning MFI certified magnetic tip for all Apple iOS devices

1 x Micro USB magnetic tip for the Victor Stream, Android devices, bluetooth speakers and headphones, MP3 Players, and any other device that uses a Micro USB plug

MFI certified

Note: Extra cables and tips are available in our store to purchase separately.

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Infinite Compatibility
Streaming wirelessly your favorite movies, songs, games, and TV shows is as simple as plugging in a 3.5mm audio jack. Let any media device turn into a Bluetooth-enabled receiver/transmitter. Let your enjoyment know no limit.
Low Latency
For the BANG to sound exactly when the trigger is pulled. For the words to be heard as soon as the lips move. For a flawlessly synchronized streaming experience that knows no lag whatsoever. It's always the right time to enjoy yourself.
TX/RX Mode
Easily switch between transmitter and receiver mode by flipping a switch. Feel the power at your fingertips with the Wireless 2-in-1 bluetooth Adapter. Uncompromised Sound aptX audio coding delivers real-time streaming high quality stereo audio. Enjoy premium CD-quality audio experience without the nuisance of wires. Untangle the fun.
Specifications:
LOW DELAY: aptX Low Latency for High-fidelity Stereo Sound, lag-free content streaming in transmitter mode. •2-in-1 Bluetooth V4.1 transmitter can be paired with two Bluetooth receivers (like headphones + speakers) simultaneously. Note: aptX Low Latency does NOT support Dual Link mode.
•ALWAYS ON: Bluetooth 4.1 2-in-1 Adapter continuously streams even while charging. Built-in battery for up to 10 hours use - enjoy your favorite wireless content all the time.
•BLUETOOTH EVERYWHERE: In Transmitter mode, turn a non-Bluetooth TV, PC, CD player, iPod, MP3 / MP4 into Bluetooth transmitter. Receiver mode: Ideal for home or vehicle music streaming sound system.
•PURE SOUND: aptX audio codec for a richer and deeper sound experience. Listen to CD-like audio quality at no

compromise.

Up to 65 foot range.

What's In the Box:
1 x Bluetooth 4.1 2-in-1 transmitter/Receiver Adapter
1 x 3.5mm Audio Cable
1 x 3.5mm Female to 2 RCA Male Cable
1 x USB Charging Cable
1 x User Guide

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The infamous Sharp EL-640 talking calculator, alarm clock, timer, clock, and calendar. One of the most rare items in the blind community and now you have a chance to own one. This is the rare model that everyone wants and includes a clock, calendar, timer, alarm clock, hourly chime, 5 minute chime, daylight savings button, and a calculator. it does a lot of things and does them amazingly well! This calculator is in excellent condition. This calculator is in excellent physical condition and works perfect. 

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When the Sharp CT 660E “Talking Time” was introduced in 1979 it represented a technological breakthrough.  It was based on the first use of LSI (large scale integration) construction as opposed to the usual method at that time of mounting discrete components to a printed circuit board.  That made it an amazingly sophisticated product in the consumer marketplace at that time.  While there had been electro-mechanical “talking” devices previously this was the first talking clock to synthesize an actual human voice.  Talking products had a short-lived popularity in the 1980’s (who can forget your car insisting that “your door is a jar”) and then for the most part faded away.
The exterior is a brushed chrome colored plastic material, however there are no signs of any of the coloration wearing off as with so many chromed-plastic products.  The faceplate appears to be glass, as there are absolutely no scratches or signs of discoloration.  The LCD screen is not illuminated.  There is one small yellow button mounted on the top to activate having the clock announce the time.  The only other external control is a thumbwheel volume control.
On the bottom is a snap-open door (that also functions as a stand to hold the clock at an easier to see angle).  Under the door is a 6-position slider switch to set the time/alarm and to set the timer for 1, 5 or 30 minutes (plus a “normal” position).  There are 3 pushbuttons for hour, minutes & set, a slide switch to activate the alarm and another 2-position slider for clock or stopwatch.
By manipulating the buttons and sliders in combination you can set a fairly sophisticated array of timer/stopwatch activities including elapsed time spoken announcements and accumulated lap time announcements.   You can also set it to announce the time at periodic intervals.  When set for time announcement a matter-of-fact male voice announces "It's 1:27 PM".  When the alarm is set,  a few bars of music plays, followed by "Attention please, the time is, 1:27 PM followed by a brief interlude of Boccherini's Minuet.  If the alarm is set and you don’t shut it off immediately it automatically goes into a snooze alarm mode with the next alert stating “The time is …. PLEASE HURRY”
SIMILAR TO:  first of its type. Introduced talking devices of every kind and millions of cheap talking clocks/watches in the decade to follow. They are becoming increasingly rare
HOW IT IMPACTS YOU:  as alluded to, the influence this device had on speech synthesized products is legend.  When you look at it the case (about the size of a pack of king-sized cigarettes, if you can relate to that) seems huge to contain nothing more than a talking clock, but in 1979 every millimeter of internal space was packed with technology that previously would have required the dimensions of a shoebox (if you can relate to that).

This unit is brand new in original box and includes original instruction booklet. It works perfect and is in perfect condition. I can offer an audio tutorial on this that I did for another customer.