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Pro Works with iOS and Android
Pro Reminds when you leave your phone behind
The device will beep when the phone is out of range, so if you leave without a phone, but have an item that has Duet attached to it, it will remind of phones absence.
Pro Removable battery
Once the built-in battery runs out, it can be changed simply by prying the device open. The company even ships extra batteries.
Pro Reliable Bluetooth connection
The Bluetooth connection between the Protag and your phone is about as reliable as you can expect. It's range is about 75 feet consistently, which makes this one of the best ranges available.
Con App can provide false information
When out of range, sometimes the app will display the location of your Protag in different continents.
Con Quiet alarm makes finding items harder
At 80dB, this alarm is quieter than the rated value of other item finders. This noise level reduces down to 50dB when measured 5 feet away, which is just a bit quieter than an average conversation