The advertised 200 foot connection seems like a massive exaggeration. In real-world tests, it would lose connection around 60 feet and wouldn't pick up the connection again until it was 20-30 feet away. This very short range isn't much help in finding your keys.
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.
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.
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
Not just item tracking, but also location sharing and distress signal functionality
Award-winning Finnish design
Stainless steel materials
Waterproof and durable
Replaceable battery
IoT buttons like BiiSafe Buddy offer a very handy interface for many different applications - they are not just item finders. Bussy is especially good in that.