The Aerial is a watch altimeter designed for skiers and snowboarders who want the ability to calculate speed of descent, while having all of the "normal" features of a watch.
+ Digital altimeter
+ Working range from -2,305ft to 30,045ft (-702m to 9,158m)
+ Current, Accumulated and Maximum altitude in ft or m
+ Altitude resolution 3ft (1m)
+ Graphic altitude trend display
+ Altitude/Temperature display
+ Rate of ascent and descent
+ Altitude alarm
+ 15 Altitude log book memories with log date, average-ascent and descent, total-ascent and descent, number of hills and total time.
+ Digital barometer
+ Sea level pressure and absolute pressure displays in both mbar/hPa and inHg
+ Resolution 1mbar (0.05inHg) working range 300mbar to 1100mbar (8.16inHg to 32.48inHg)
+ Graphic barometer display
+ Weather forecast
+ Barometer/Temp display
+ Input current altitude and base altitude, start chrono / chrono auto stops when base altitude is reached
+ Calculates speed of descent
+ Resolution 0.1° in °F and °C
+ Working range +14°F to +122°F (-10°C to +50°C)
+ Resolution 1/100 second with maximum time range 24hr 00min 00sec
+ Maximum 50 laps/20 runs
+ Times for each lap and split with best and average laps' time
+ Time/Day/Date/Month with Dual Time Zone
+ 12 or 24 hour format
+ Time/Temp display
+ Dual daily alarm and hourly chime
+ EL backlight system
+ Mineral glass lens
+ Water resistant 5Om
+ 1.7oz (48g)
+ Consumer serviceable battery (1 CR2032)
Observations and Nuances...I bought this watch a little over 6 months ago. Here are a couple of things that I find quite quirky about it:
1. When you are setting a known elevation the incriments adjust in steps of 1 foot at a time, and there is no way around this. So let's say the altimeter is 1500 feet off, you have to hold the button on the watch while it scrolls through 1500 feet of elevation..... And, NO, it does not speed up or start skipping in steps of 5 or 10 feet after you hold the button down for "X" amount of time.
2. With the chronograph, you have to hold the "reset" button for 3 to 5 seconds in order to reset the chronometer back to "00.00" That can be kind of a pain if your trying to reset the chronometer multiple times.
3. I've never had a problem with the thermometer, but you also cannot adjust it.
Overall, this is a decent watch with some interesting features, but it could be more user friendly.