Yes, Nokia 3310 does have bluetooth.
Nokia 3310 is a dual sim mobile phone.
Yes, Nokia 3310 comes pre-loaded with Opera browser. But the speed will not be high as it works maximum on 2.5G network.
There are a few things that do bring back the feeling of owning an original Nokia 3310, such as the classic Nokia ringtone, the physical buttons, the tiny body, and solid build quality.
You can buy other feature phones for less than this, and the new Nokia 3310 doesn't justify the extra outlay over the simple nostalgia card it's playing.