Mutrics is IP55 rated. The first 5 means the prevention of ingress of dust must be sufficient so as not to interfere with the satisfactory operation of the equipment. So, you can wear these to the snow or desert.
The second 5 means water projected by a nozzle (6.3 mm) against enclosure from any direction shall have no harmful effects. It is rain/sweat resistant.
The hinges are nylon with a metal pin and tension screw to tighten the arms. Bose hinges are metal with a tension screw.
Summary: Mutrics IP55 versus Bose IPX2 is a strong incentive. Both have similar lasting quality.
Mutrics uses a Qualcomm BT 5.0 chip with aptX high-def sound and Qualcomm
The Qualcomm SoC has up to 65% lower power use (than BT 4.2), which accounts for the exceptionally long 8-hour battery life.
As it is industry-standard, it will pair with any Bluetooth source device without an app. Bose Frames has an app but its not necessary for straight BT use.
It has an on/off button (as well as auto power off) and up/down volume buttons, and these are for accepting/rejecting calls, playing music (forward/back) and accessing the voice assistant.
Bose uses one context-dependent button. I prefer three buttons.
The 140mAh battery takes a 5V/.5A to 5V/3A charge via a USB-A to a proprietary magnetic clamp.
Claimed battery life is 8+ hours.
Over five days of walking for a total of four hours, the charge level is 40% – pass.
Recharge for that 60% took just over an hour with a 5V/2A charger – pass.
Summary: Bose has a 3.5-hour battery, and if battery life is important, Mutrics has over twice the life for the same charge time.
These are ‘open-ear’ meaning you can hear your surrounds clearly.