This comparison is although not fair because of Airpod’s 2nd generation released after two years of 1st generation Airpods. But the interesting thing about this comparison that both devices have a similar design and somehow a bit different in specification side.
|Airpods 2||Airpods 1|
|H1 Chip||W1 Chip|
|5 hours (Music Playback)||5 hours (Music Playback)|
|3 hours (Talktime)||2 hours (Talktime)|
|Hey Siri (Supported)||Touch Support|
|Wireless Case (Support)||Wireless Case (Support)|
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So, the main difference is in the chip and also in the battery timing while doing some phone calls. The main thing that you also get a wireless case for your Airpods 1st generation in $79 directly from your Apple Store.