- Sound quality; autonomy
- The size.
- Good charging, lasts for a week when used on the road from home to work and back, and I also use it at work. Loud enough. The high coverage range of the bluetooth, I did not measure it in meters, but it beats enough. Fits easily in a windbreaker or jacket pocket.
- There is no sound filter in the microphone, it catches extraneous noises, the sound of a traffic light at a distance of five meters partially interrupts the voice. But on the other hand, most phones have this problem. Ears ache from prolonged wear.
- Excellent headphones. Signature bass, and even at maximum volume, those around you won't be able to hear your music, as is the case with airpods. Excellent independence.
- On occasion, there will be a temporary breakdown in the phone's capacity to communicate.
- - the length of time the battery will last - the number of buttons on the headset itself
- - CONNECTION THROUGH BLUETOOTH FOR LAPTOPS - SOUND! - (not) to do tasks in teams
- ratio of cost to benefit
- not yet available, however micro-USB might be an option.