The Ion Air Pro (which is the basis of all three of Ion's new sports camera packages) uses a bullet camera design with a metal tube chassis. The camera is waterproof (up to 30 meters) and features a waterproof microphone that allows it to keep recording even when submerged. Along the top side you'll find a power button that doubles as a still-photo shutter release and a recording slider. Slide the recording slider forward to start video capture and slide it back to stop. All inputs (power on/off, still snap, and video start/stop) are signaled with haptic feedback from the Ion Air Pro's internal vibration motor. Personally, I like the audible beep that Contour's and GoPro's cameras emit during these events, but the hum and buzz of the Ion was certainly less obtrusive and less annoying to those around me during testing.
The bottom edge is where you'll find Ion's Cam Lock system -- a plastic clip attached to the base of the camera that allows easy attachment to and removal from the plethora of mounting options included with the Ion Air Pro Plus and Ion Air Pro Wi-Fi kits. The Cam Lock clip can be removed with a flat-tipped screwdriver (or a coin) to reveal a standard threaded tripod connection for attachment to the included flexible mini-tripod or any user-supplied tripod or monopod. Ion also will sell separately other mounting options, such as a Panavise suction cup mount (the same mount, in fact, used by GoPro and Contour) for automotive applications.
The business end of the Ion Air Pro is where you'll find its lens, an ultra-wide-angle job with a 170-degree field of view that puts it on par with its main two competitors. The lens sits behind dome-shaped glass, like that of the GoPro HD Hero cameras, which Ion claims allows the Ion Air Pro to shed water better for a clearer shot than the ContourHD camera's flat glass. However, I'm convinced that the protruding glass dome will be easier to scratch than the Contour's (which is mostly protected by a raised metal bezel) if the camera, for example, falls off of a moving vehicle. A ring of six small screws around the Ion Air Pro's lens seems to indicate that it may be possible to replace the glass if it does get damaged.
At the back end, the Ion Air Pro has a locking cap that twists and releases to reveal the camera's connections. Here, you'll find a microSD card slot that accepts up to 32GB of storage (no card is included in the box, so be sure to factor that additional cost into the total price), a 3.5mm AV output, an HDMI mini connector (type C) for AV output, a Micro-USB connection for charging the 1,200 mAH battery (approx 2.5 hours of recording time) and syncing files, a pinhole reset button, and a switch for choosing among user-preset HD recording modes. That's nearly a port for port replication of the Contour+ with the addition of that analog AV output. GoPro's HD Hero2 features more ports and the more robust (in my opinion) full-size SD card slot and Mini-USB connection. However, the GoPro's connections are largely unreachable when the camera is locked into its clear housing.
Comparisons to Contour cameras
At first glance, the Ion Air Pro may appear to be a bit of a ContourHD-alike. And while that may not be the case, both cameras do look a lot alike. Put side-by-side with the ContourRoam, the newest of Contour's cameras, the Ion Air Pro is slightly longer, partially thanks to its convex lens glass. However, because the Ion camera lacks the protruding lower hump of the Contour cameras, the Air Pro ends up looking sleeker from most angles. At only 4.5 ounces, the Ion Air Pro is also the lighter of the two cameras by a hair.
Contour's rail-mounting system allows for more flexible mounting than the Ion Air Pro, which only features a single mounting point at its base. The Contour camera can be mounted on either of its sides or from its base, plus its lens can be rotated to any angle within a 270-degree range to match the camera's orientation. The Ion Air Pro features an auto-orientation sensor that detects if the camera is mounted upside down when the record switch is pushed and automatically rotates the recorded video right side up. However, the Ion Air Pro can only detect within 90-degree increments, whereas the Contour cameras can be twisted to any angle in between by using a physically rotating camera, rather than a software fix. Additionally, starting a recording with the camera rotated at a 90-degree angle results in a weird vertical HD "I recorded this video on my iPhone in portrait orientation" video format that doesn't fit any screen or video-sharing service that I've ever seen without massive black bars to either side. So while the Ion Air Pro will more or less orient itself automatically, getting properly oriented video from, for example, a goggle strap mount, requires a weird L-shaped bracket where the Contour could just mount flush.
Users have a choice between a few HD video modes with the Ion Air Pro including the standard Full HD 1080p, Tall HD 960p, and 720p HD at 30 and 60 fps. While recording, the Ion Air Pro is able to do a few things that the Contour and GoPro cameras can't. For starters, alongside every HD video recorded, the Ion Air Pro also records a second WVGA (480p) thumbnail video that can be used for quickly sharing to social networks and the like. Users can also tap the photo button at any time (even while recording a video) to snap a quick 5MP JPEG photo. Additionally, while the Ion Air Pro features time lapse and burst photo capture modes.