Yes, it is compatible with devices from 4.2 Bluetooth version (your iPhone has 5.0). Some users say the headphones fall out of the ear and the sound quality is not convincing. It's best to read some reviews
I can't say anything about the sound quality because I don't know the Airpods. For my taste, the quality and bass are great! I wear them from time to time at work and the battery lasts 5 hours (or more) at medium volume without any problems. I have never used them empty, so I can't say how much longer they last than 5 hours. The lunch break (1h) is enough to fully charge the buds again. I charge the case about 1 to 2 times a week. I am very satisfied with the Buds, so I ordered some for my wife. I hope this information is helpful for you Viechroy.