- 1. The hours worked 2. The convenience of use 3. The quality of the sound 4. The grade of the materials 5. the ratio of competitors' prices to the quality of their products 6. headphones that use magnets
- 1. Charging device with a short cord 2. There is no charging box provided. 3. Is that how much it costs? Yet for the price, I can't think of anything that compares.