Size:- Its too small, even if you keep anywhere without headphone attached, you probably lost it. You can't imagine what Apple does in this tiny shuffle.
Sound:- It's great. You can go higher than competitors product. I used it with Tekfusion Twinwoofer.it sounds great with decent bass. In some high bit songs; the bass production is really impressive.(I didn't used stock headphones till now with iPod shuffle)
Volume:- You can go very high as compared to Sony & Philips(at least 10% - 25%)
VoiceOver Feature:- You need to installed it while setting it up. Its great. It will tell you which song is playing. Double click tells battery percentage(Only Full Charge, 75%, 50%). You can shuffle in between All songs, Your custom playlists, Audio book with great ease.
Battery:- I used it around for around 6-7 hrs. Still it tells me than 50% battery remaining. I think it will last for at 10-12 hrs(I am not sure, as I didn't check). Some sites were revealed that the Shuffle battery last more than 15 hrs(17 hrs) as stated by Apple
Built Quality:- No buddy in this world can bit the Apples' built quality. Still I m amazed aesthetic looks.how Apple managed to put Such a great quality sound with 15 hrs of battery.
Ease of Use:- I never had any issue while finding any song. If you very well organised(Playlists'), then you won't find it any difficulties. VoiceOver feature will you to hear what you want to.
Final Remark:- iPod Shuffle 4th generation.Go for it. I don't thing any problem till now. Great Bass(With Tekfusion Twinwoofer).Higher Volume.Great Battery Life.
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