I'm impressed. I've always stayed away from Bluetooth headphones because they're heavier & don't have aux backups. Utility series definitely piqued my interest.

The battery life has been pretty good so far. Occasionally it will go into a low-data mode where it seemingly loses strong connection with the phone, so the audio gets super compressed. Otherwise, the clip for securing the adapter could be more versatile.

Main gripe is the lack of 3.5mm adapter -- if you're selling a 2.5mm product for fidelity (vs unbalanced 3.5mm), then be sure to include adapter for 3.5mm. I don't understand why you'd want to limit customers from being able to use this device with other applications, unless you're also planning to sell separate adapters like the Apple route?

16 Ohm situation, I guess?

Nice accessory for the utility port-a-prose. Easy to set up and works great.

A really small nifty bluetooth device that connects well and delivers exceptional sound through kph40. Its not that heavy to let it dangle on your chest when the kph40 is worn

Works well. Great product

This is a great dongle! Makes the porta pro and khp40 almost fully wireless. The connection is great and the weight is light. I wish the clip was made horizontal instead of vertical and it has a thumb section to open it.