The two-pound device measures 5.4 inches by 1.1 inches by 3.3 inches. It's likely larger and heavier than whatever storage device you're going to connect it to, but given that quality sound processing requires room, we think its size is about right. (Maybe it should have been bigger--see the Performance section.) The iKey's sturdy, well-built chassis houses no screen and only a few controls--two large buttons, a volume wheel, and a recessed Reset button--which makes sense, considering the device's simple purpose. Instead, there's just a series of LEDs on the front of the case. Once you've used the device for a little while, you won't need to consult the menu to figure out what the LEDs are trying to tell you.
A standard USB port for connecting MP3 players or flash-memory keychains rounds out the equation; the keychain proposition is nice for mobile recording because it means one fewer battery to worry about, but it also limits how much you can record.Since the Gemini iKey is designed to do only one thing and lacks a screen, there aren't many features to cover. Connect the iKey to your MP3 player, your flash-memory keychain, or any other portable USB device with disk space; wait for the iKey to recognize it; set your recording quality using the Sel button and LED indicators (uncompressed WAV or MP3 at 128Kbps, 192Kbps, or 256Kbps); and hit the record button--you're up and running.
The sound file is saved in the root directory of flash keychains and most MP3 players or in an iPod's Music folder. The first time you get recording off an iPod, you'll need to follow the instructions in the manual carefully since Apple tries to hide the folder to discourage piracy. Once you've set up a shortcut as recommended by the manual, you'll be able to link directly to your iKey recordings folder seconds after connecting the iPod to your computer.
The LEDs on the front might look like a volume meter, but they're not. Instead, you can establish a good recording level by paying attention to the Level Clip LED, which lights up if the volume level is too high or low, and adjusting the volume wheel accordingly. The LEDs also alert you to how much disk space your storage medium has left; 100 percent means the device is empty, while 0 percent means you're out of space.
Recorded files are titled iKEY_mp3_0, iKEY_mp3_1, iKEY_wav_0, and so on. This means you can start and stop recording a bunch of times without overwriting your previous recordings. However, the iKey doesn't time-stamp the files, so you can't sort them by date.