Yes, Nokia 3310 keypad is backlit enabled.
Nokia 3310 Dual Sim variant comes with Mobile Phone, Battery, USB Micro Charger, Earphone and Quick Start Guide as in-the-box accessories.
Yes, Nokia 3310 does have FM radio.
The display of Nokia 3310 is 2.4 Inch with QVGA resolution.
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.